Access Management in the Vicinity of Interchanges, Volume 2: Research Overview (2022)

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A-1   A P P E N D I X A Arizona (AZ) Interchanges— Site Characteristics The study included an evaluation of six Arizona study sites. These include three signalized diamond interchanges, two signalized single-point urban interchanges (SPUI), and one roundabout terminal treatment interchange. The sites’ details are summarized as follows. Interchange AZ #1: I-17 at S. 7th Ave., Phoenix, Arizona Appendix Table 1. General Site Information for AZ #1 (Phoenix) Interchange. Latitude 33.429278° Longitude -112.082419° Highway Name I-17 Milepoint 196 Crossroad Name S. 7th Ave. City and State Phoenix, AZ Interchange Type Diamond Frontage Roads? Yes Terminal Control Type Signal Free-Flow Right Turns? No Corridor Endpoint 1 W. Watkins St. Corridor Endpoint 2 W. Pima St. Appendix Figure 1. Aerial Photo of AZ #1 Interchange. Map data ©2019 Google

A-2 Access Management in the Vicinity of Interchanges Appendix Table 2. Corridor Information for South Side of AZ #1 Interchange. Crossroad Information AADT/ADT (vehicles/day) 27,600 Posted Speed (mph) 35 Number of Through Lanes 2 Restrictive Median (ft) 148 Continuous or Strategic? Continuous Access Spacing Information from Ramp Terminal Distance from Exit Ramp to First Left Turn from Crossroad (ft) 1,088 Distance to First Full Access Point (ft) 1,088 Distance to First Major Intersection (ft) 1,088 Major Intersection Traffic Control Type (Signal, 2-Way Stop, All- Way Stop) Signal Turn Lanes at Major Intersection (Left, Right, or Both) Left Distance from Major Intersection to Nearest Driveway (ft) 311 Downstream Driveway Information 1st Driveway 2nd Driveway 3rd Driveway 4th Driveway Distance from Exit Ramp to Driveway (Edge of Travel Way) (ft) 276 732 Distance from Exit Ramp to Driveway (End of Accel Lane, if applicable) (ft) — — Distance from Exit Ramp to Driveway (End of Accel Taper, if applicable) (ft) — — Driveway Type (Right Turns Only, Rights + Left In, Rights + Left Out, Full Movement) RI & RO RI & RO Median Type at Driveway (Raised, Painted, Directional) Painted Painted Driveway Island Present? (Yes or No) No No Driveway Width (ft) 40 41 Driveway Peak (Off-Peak) Volume (vph) 37 (36) 35 (21) Roadway Peak (Off-Peak) Volume (vph) 618 (579) Upstream Driveway Information 1st Driveway 2nd Driveway 3rd Driveway 4th Driveway Distance from Entrance Ramp to Driveway (Edge of Travel Way) (ft) 135 223 343 388 Distance from Entrance Ramp to Driveway (End of Accel Lane, if applicable) (ft) — — — — Distance from Entrance Ramp to Driveway (End of Accel Taper, if applicable) (ft) — — — — Driveway Type (Right Turns Only, Rights + Left In, Rights + Left Out, Full Movement) RI & RO RI & RO Full Movement Full Movement Median Type at Driveway (Raised, Painted, Directional, TWLTL, None) Painted Painted TWLTL TWLTL Driveway Island Present? (Yes or No) No No No No Driveway Width (ft) 51 17 18 18 Driveway Peak (Off-Peak) Volume (vph) 17 (11) 15(10) <10 (<10) <10 (<10) Roadway Peak (Off-Peak) Volume (vph) 700 (356)

Arizona (AZ) Interchanges—Site Characteristics A-3 Appendix Table 3. Corridor Information for North Side of AZ #1 Interchange. Crossroad Information AADT/ADT (vehicles/day) 18,800 Posted Speed (mph) 35 Number of Through Lanes 2 Restrictive Median (ft) 194 Continuous or Strategic? Continuous Access Spacing Information from Ramp Terminal Distance from Exit Ramp to First Left Turn from Crossroad (ft) 521 Distance to First Full Access Point (ft) 521 Distance to First Major Intersection (ft) 1,213 Major Intersection Traffic Control Type (Signal, 2-Way Stop, All- Way Stop) 2-Way Stop Turn Lanes at Major Intersection (Left, Right, or Both) Left Distance from Major Intersection to Nearest Driveway (ft) 325 Downstream Driveway Information 1st Driveway 2nd Driveway 3rd Driveway 4th Driveway Distance from Exit Ramp to Driveway (Edge of Travel Way) (ft) 123 494 867 Distance from Exit Ramp to Driveway (End of Accel Lane, if applicable) (ft) — — — Distance from Exit Ramp to Driveway (End of Accel Taper, if applicable) (ft) — — — Driveway Type (Right Turns Only, Rights + Left In, Rights + Left Out, Full Movement) RI & RO Full Movement Full Movement Median Type at Driveway (Raised, Painted, Directional, TWLTL, None) Raised None None Driveway Island Present? (Yes or No) No No No Driveway Width (ft) 34 43 29 Driveway Peak (Off-Peak) Volume (vph) 62 (16) 128 (85) 55 (38) Roadway Peak (Off-Peak) Volume (vph) 860 (624) Upstream Driveway Information 1st Driveway 2nd Driveway 3rd Driveway 4th Driveway Distance from Entrance Ramp to Driveway (Edge of Travel Way) (ft) 525 850 Distance from Entrance Ramp to Driveway (End of Accel Lane, if applicable) (ft) — — Distance from Entrance Ramp to Driveway (End of Accel Taper, if applicable) (ft) — — Driveway Type (Right Turns Only, Rights + Left In, Rights + Left Out, Full Movement) Full Movement Full Movement Median Type at Driveway (Raised, Painted, Directional) No Median No Median Driveway Island Present? (Yes or No) No No Driveway Width (ft) 38 34 Driveway Peak (Off-Peak) Volume (vph) 69 (33) 86 (51) Roadway Peak (Off-Peak) Volume (vph) 891 (1,114)

A-4 Access Management in the Vicinity of Interchanges Appendix Table 4. Collision Type Summary Table for AZ #1 Interchange. Collision Type 2011 2012 2013 Total Average per year Angle 19 12 12 43 14 Backing 0 0 0 0 0 Head-On 0 0 1 1 0 Rear End 13 12 5 30 10 Vehicle Bike 1 1 0 2 1 Vehicle Pedestrian 1 1 1 3 1 Sideswipe Same Direction 6 3 5 14 5 Single Vehicle Crash 1 3 1 5 2 Total 41 32 25 98 33 Appendix Table 5. Crash Severity Summary Table for AZ #1 Interchange. Severity 2011 2012 2013 Total Average per year Fatal Crash (K) 1 0 0 1 0 Incapacitating Injury (A) 5 0 1 6 2 Non-Incapacitating Injury (B) 4 5 4 13 4 Possible Injury (C) 7 11 4 22 7 Property Damage Only (O) 24 16 16 56 19 Total 41 32 25 98 33 Appendix Figure 2. 2011 Crash Overview Schematic for AZ #1.

Arizona (AZ) Interchanges—Site Characteristics A-5 Appendix Figure 3. 2012 Crash Overview Schematic for AZ #1. Appendix Figure 4. 2013 Crash Overview Schematic for AZ #1.

A-6 Access Management in the Vicinity of Interchanges Appendix Figure 5. 2013 Collision Diagram (South End) for AZ #1. Appendix Figure 6. 2013 Collision Diagram (South Side at Interchange) for AZ #1.

Arizona (AZ) Interchanges—Site Characteristics A-7 Appendix Figure 7. 2013 Collision Diagram (North Side at Interchange) for AZ #1. Appendix Figure 8. 2013 Collision Diagram (North End) for AZ #1.

A-8 Access Management in the Vicinity of Interchanges Interchange AZ #2: 27th Ave. at SR-101, Phoenix, Arizona Appendix Table 6. General Site Information for AZ #2 Interchange. Latitude 33.668675° Longitude -112.117233° Highway Name Agua Fria Freeway Milepoint 23 Crossroad Name 27th Ave, City and State Phoenix, AZ Interchange Type Diamond Frontage Roads? No Terminal Control Type Signal Free-Flow Right Turns? Yes, North Intersection Only Corridor Endpoint 1 W. Runion Dr. Corridor Endpoint 2 19800 North Appendix Figure 9. Aerial Photo of AZ #2 Interchange. Map data ©2019 Google

Arizona (AZ) Interchanges—Site Characteristics A-9 Appendix Table 7. Corridor Information for North Side of AZ #2 Interchange. Crossroad Information AADT/ADT (vehicles/day) Posted Speed (mph) 35 Number of Through Lanes 2 Restrictive Median (ft) 1,082 Continuous or Strategic? Strategic Access Spacing Information from Ramp Terminal Distance from Exit Ramp to First Left Turn from Crossroad (ft) 459 Distance to First Full Access Point (ft) 459 Distance to First Major Intersection (ft) 1,082 Major Intersection Traffic Control Type (Signal, 2-Way Stop, All- Way Stop) 2-Way Stop Turn Lanes at Major Intersection (Left, Right, or Both) Both Distance from Major Intersection to Nearest Driveway (ft) 571 Downstream Driveway Information 1st Driveway 2nd Driveway 3rd Driveway 4th Driveway Distance from Exit Ramp to Driveway (Edge of Travel Way) (ft) 473 Distance from Exit Ramp to Driveway (End of Accel Lane, if applicable) (ft) — Distance from Exit Ramp to Driveway (End of Accel Taper, if applicable) (ft) — Driveway Type (Right Turns Only, Rights + Left In, Rights + Left Out, Full Movement) Full Movement Median Type at Driveway (Raised, Painted, Directional, TWLTL, None) None Driveway Island Present? (Yes or No) No Driveway Width (ft) 39 Driveway Peak (Off-Peak) Volume (vph) 274 (98) Roadway Peak (Off-Peak) Volume (vph) 665 (349) Upstream Driveway Information 1st Driveway 2nd Driveway 3rd Driveway 4th Driveway Distance from Entrance Ramp to Driveway (Edge of Travel Way) (ft) 246 494 904 Distance from Entrance Ramp to Driveway (End of Accel Lane, if applicable) (ft) 80 324 732 Distance from Entrance Ramp to Driveway (End of Accel Taper, if applicable) (ft) 43 286 696 Driveway Type (Right Turns Only, Rights + Left In, Rights + Left Out, Full Movement) RI & RO Full Movement RI & RO Median Type at Driveway (Raised, Painted, Directional, TWLTL, None) Raised None Raised Driveway Island Present? (Yes or No) No No No Driveway Width (ft) 29 39 34 Driveway Peak (Off-Peak) Volume (vph) 70 (63) 81 (44) NA Roadway Peak (Off-Peak) Volume (vph) 867 (455)

A-10 Access Management in the Vicinity of Interchanges Appendix Table 8. Corridor Information for South Side of AZ # 2 Interchange. Crossroad Information AADT/ADT (vehicles/day) Posted Speed (mph) 35 Number of Through Lanes 3 Restrictive Median (ft) 697 Continuous or Strategic? Strategic Access Spacing Information from Ramp Terminal Distance from Exit Ramp to First Left Turn from Crossroad (ft) 360 Distance to First Full Access Point (ft) 360 Distance to First Major Intersection (ft) 703 Major Intersection Traffic Control Type (Signal, 2-Way Stop, All- Way Stop) Signal Turn Lanes at Major Intersection (Left, Right, or Both) Both Distance from Major Intersection to Nearest Driveway (ft) 285 Downstream Driveway Information 1st Driveway 2nd Driveway 3rd Driveway 4th Driveway Distance from Exit Ramp to Driveway (Edge of Travel Way) (ft) 195 387 Distance from Exit Ramp to Driveway (End of Accel Lane, if applicable) (ft) — — Distance from Exit Ramp to Driveway (End of Accel Taper, if applicable) (ft) — — Driveway Type (Right Turns Only, Rights + Left In, Rights + Left Out, Full Movement) RI & RO Full Movement Median Type at Driveway (Raised, Painted, Directional) Raised None Driveway Island Present? (Yes or No) No No Driveway Width (ft) 33 32 Driveway Peak (Off-Peak) Volume (vph) 206 (200) 240 (151) Roadway Peak (Off-Peak) Volume (vph) 763 (504) Upstream Driveway Information 1st Driveway 2nd Driveway 3rd Driveway 4th Driveway Distance from Entrance Ramp to Driveway (Edge of Travel Way) (ft) 400 Distance from Entrance Ramp to Driveway (End of Accel Lane, if applicable) (ft) — Distance from Entrance Ramp to Driveway (End of Accel Taper, if applicable) (ft) — Driveway Type (Right Turns Only, Rights + Left In, Rights + Left Out, Full Movement) Full Movement Median Type at Driveway (Raised, Painted, Directional, TWLTL, None) None Driveway Island Present? (Yes or No) No Driveway Width (ft) 37 Driveway Peak (Off-Peak) Volume (vph) 134 (188) Roadway Peak (Off-Peak) Volume (vph) 898 (331)

Arizona (AZ) Interchanges—Site Characteristics A-11 Appendix Table 9. Collision Type Summary Table for AZ #2 Interchange. Collision Type 2011 2012 2013 Total Average per year Angle 16 25 19 60 20 Backing 0 0 1 1 0 Head-On 0 0 0 0 0 Rear End 2 4 4 10 3 Sideswipe Same Direction 15 10 14 39 13 Vehicle Bike 0 0 1 1 0 Single Vehicle Crash 1 2 2 5 2 Total 34 41 41 116 39 Appendix Table 10. Crash Severity Summary Table for AZ #2 Interchange. Severity 2011 2012 2013 Total Average per year Fatal Crash (K) 0 0 0 0 0 Incapacitating Injury (A) 2 2 1 5 2 Non-Incapacitating Injury (B) 4 9 8 21 7 Possible Injury (C) 6 7 6 19 6 Property Damage Only (O) 22 23 26 71 24 Total 34 41 41 116 39 Appendix Figure 10. 2011 Crash Overview Schematic for AZ #2.

A-12 Access Management in the Vicinity of Interchanges Appendix Figure 11. 2012 Crash Overview Schematic for AZ #2. Appendix Figure 12. 2013 Crash Overview Schematic for AZ #2.

Arizona (AZ) Interchanges—Site Characteristics A-13 Appendix Figure 13. 2013 Collision Diagram (South End) for AZ #2. Appendix Figure 14. 2013 Collision Diagram (North at Interchange) for AZ #2.

A-14 Access Management in the Vicinity of Interchanges Appendix Figure 15. 2013 Collision Diagram (North End) for AZ #2.

Arizona (AZ) Interchanges—Site Characteristics A-15 Interchange AZ #3: I-17 at Bell Rd., Phoenix, Arizona Appendix Table 11. General Site Information for AZ #3 Interchange. Latitude 33.639877° Longitude -112.115563° Highway Name I-17 Milepoint 212 Crossroad Name Bell Rd. City and State Phoenix, AZ Interchange Type Diamond Frontage Roads? No Terminal Control Type Signal Free-Flow Right Turns? No Corridor Endpoint 1 23rd Ave. Corridor Endpoint 2 Holmes Blvd. Appendix Figure 16. Aerial Photo of Entire Corridor at AZ #3 Interchange. Map data ©2019 Google

A-16 Access Management in the Vicinity of Interchanges Appendix Table 12. Information for East Side of I-17 at AZ #3 Interchange. Crossroad Information AADT/ADT (vehicles/day) 44,100 Posted Speed (mph) 45 Number of Through Lanes 3 Restrictive Median (ft) 1,632 Continuous or Strategic? Strategic Access Spacing Information from Ramp Terminal Distance from Exit Ramp to First Left Turn from Crossroad (ft) 320 Distance to First Full Access Point (ft) 320 Distance to First Major Intersection (ft) 1,640 Major Intersection Traffic Control Type (Signal, 2-Way Stop, All- Way Stop) Signal Turn Lanes at Major Intersection (Left, Right, or Both) Both Distance from Major Intersection to Nearest Driveway (ft) 382 Downstream Driveway Information 1st Driveway 2nd Driveway 3rd Driveway 4th Driveway Distance from Exit Ramp to Driveway (Edge of Travel Way) (ft) 305 613 878 1,227 Distance from Exit Ramp to Driveway (End of Accel Lane, if applicable) (ft) — — — — Distance from Exit Ramp to Driveway (End of Accel Taper, if applicable) (ft) — — — — Driveway Type (Right Turns Only, Rights + Left In, Rights + Left Out, Full Movement) Rights + LI Rights + LI Full Movement Full Movement Median Type at Driveway (Raised, Painted, Directional) Directional Directional None None Driveway Island Present? (Yes or No) Yes No No No Driveway Width (ft) 54 38 45 30 Driveway Peak (Off-Peak) Volume (vph) 47 (103) 14 (38) 37 (63) 33 (48) Roadway Peak (Off-Peak) Volume (vph) 1,211 (1,088) Upstream Driveway Information 1st Driveway 2nd Driveway 3rd Driveway 4th Driveway Distance from Entrance Ramp to Driveway (Edge of Travel Way) (ft) 342 423 506 723 Distance from Entrance Ramp to Driveway (End of Accel Lane, if applicable) (ft) 135 217 300 515 Distance from Entrance Ramp to Driveway (End of Accel Taper, if applicable) (ft) 18 90 182 400 Driveway Type (Right Turns Only, Rights + Left In, Rights + Left Out, Full Movement) Rights+ LI RI & RO Full Movement RI & RO Median Type at Driveway (Raised, Painted, Directional, TWLTL, None) Directional Raised None Raised Driveway Island Present? (Yes or No) No No No No Driveway Width (ft) 34 44 68 29 Driveway Peak (Off-Peak) Volume (vph) 30 (60) 24 (44) 82 (109) 28 (31) Roadway Peak (Off-Peak) Volume (vph) 1,889 (915)

Arizona (AZ) Interchanges—Site Characteristics A-17 Appendix Table 13. Corridor Information for West Side of AZ #3 Interchange. Crossroad Information AADT/ADT (vehicles/day) 41,900 Posted Speed (mph) 45 Number of Through Lanes 3 Restrictive Median (ft) 1,170 Continuous or Strategic? Strategic Access Spacing Information from Ramp Terminal Distance from Exit Ramp to First Left Turn from Crossroad (ft) 292 Distance to First Full Access Point (ft) 626 Distance to First Major Intersection (ft) 1,170 Major Intersection Traffic Control Type (Signal, 2-Way Stop, All- Way Stop) Signal Turn Lanes at Major Intersection (Left, Right, or Both) Left Distance from Major Intersection to Nearest Driveway (ft) 200 Downstream Driveway Information 1st Driveway 2nd Driveway 3rd Driveway 4th Driveway Distance from Exit Ramp to Driveway (Edge of Travel Way) (ft) 343 474.88 784 953 Distance from Exit Ramp to Driveway (End of Accel Lane, if applicable) (ft) — — — — Distance from Exit Ramp to Driveway (End of Accel Taper, if applicable) (ft) — — — — Driveway Type (Right Turns Only, Rights + Left In, Rights + Left Out, Full Movement) Rights + LI RI & RO RI & RO RI & RO Median Type at Driveway (Raised, Painted, Directional) Directional Raised Raised Raised Driveway Island Present? (Yes or No) No No No No Driveway Width (ft) 35 34 38 21 Driveway Peak (Off-Peak) Volume (vph) 90 (24) 34 (15) <10 (<10) 55 (29) Roadway Peak (Off-Peak) Volume (vph) 1,893 (894) Upstream Driveway Information 1st Driveway 2nd Driveway 3rd Driveway 4th Driveway Distance from Entrance Ramp to Driveway (Edge of Travel Way) (ft) 283 537 753 Distance from Entrance Ramp to Driveway (End of Accel Lane, if applicable) (ft) 96 350 568 Distance from Entrance Ramp to Driveway (End of Accel Taper, if applicable) (ft) -106 151 368 Driveway Type (Right Turns Only, Rights + Left In, Rights + Left Out, Full Movement) Rights + LI RI & RO Rights + LI Median Type at Driveway (Raised, Painted, Directional, TWLTL, None) Directional Raised Directional Driveway Island Present? (Yes or No) Yes No No Driveway Width (ft) 51.31 43.65 31.11 Driveway Peak (Off-Peak) Volume (vph) 145 (97) 15 (16) 294 (239) Roadway Peak (Off-Peak) Volume (vph) 1,242 (934) Note: Negative distance indicates that the driveway is ahead of the end of the taper.

A-18 Access Management in the Vicinity of Interchanges Appendix Table 14. Collision Type Summary Table for AZ #3 Interchange. Collision Type 2011 2012 2013 Total Average per year Angle 22 26 33 81 27 Backing 0 0 0 0 0 Head-On 1 0 0 1 0 Rear End 37 35 34 106 35 Vehicle Bike 1 1 0 2 1 Vehicle Pedestrian 2 1 0 3 1 Sideswipe Same Direction 8 9 9 26 9 Sideswipe Opposite Direction 0 1 0 1 0 Single Vehicle Crash 2 3 6 11 4 Total 73 76 82 231 77 Appendix Table 15. Crash Severity Summary Table for AZ #3 Interchange. Severity 2011 2012 2013 Total Average per year Fatal Crash (K) 0 0 0 0 0 Incapacitating Injury (A) 2 3 5 10 3 Non-Incapacitating Injury (B) 12 8 11 31 10 Possible Injury (C) 21 23 15 59 20 Property Damage Only (O) 38 42 51 131 44 Total 73 76 82 231 77 Appendix Figure 17. 2011 Crash Overview Schematic for AZ #3.

Arizona (AZ) Interchanges—Site Characteristics A-19 Appendix Figure 19. 2013 Crash Overview Schematic for AZ #3. Appendix Figure 18. 2012 Crash Overview Schematic for AZ #3.

A-20 Access Management in the Vicinity of Interchanges Appendix Figure 21. 2013 Collision Diagram (West Side at Interchange) for AZ #3. Appendix Figure 20. 2013 Collision Diagram (West End) for AZ #3.

Arizona (AZ) Interchanges—Site Characteristics A-21 Appendix Figure 23. 2013 Collision Diagram (East Side at Interchange) for AZ #3. Appendix Figure 22. 2013 Collision Diagram (Overpass Region) for AZ #3.

A-22 Access Management in the Vicinity of Interchanges Appendix Figure 24. 2013 Collision Diagram (East End) for AZ #3.

Arizona (AZ) Interchanges—Site Characteristics A-23 Interchange AZ #4: I-17 at Bethany Home Rd., Phoenix, Arizona Appendix Table 16. General Site Information for AZ #4 Interchange. Latitude 33.524062° Longitude -112.112278° Highway Name I-17 Milepoint 204 Crossroad Name Bethany Home Rd. City and State Phoenix, AZ Interchange Type SPUI Frontage Roads? Yes Terminal Control Type Signal Free-Flow Right Turns? No Corridor Endpoint 1 N. 23rd Ave. Corridor Endpoint 2 N. 27th Ave. Appendix Figure 25. Aerial Photo of Entire Corridor at AZ #4 Interchange. Map data ©2019 Google

A-24 Access Management in the Vicinity of Interchanges Appendix Table 17. Corridor Information for East Side of AZ #4 Interchange. Crossroad Information AADT/ADT (vehicles/day) 44,700 Posted Speed (mph) 40 Number of Through Lanes 3 Restrictive Median (ft) 370 Continuous or Strategic? Strategic Access Spacing Information from Ramp Terminal Distance from Exit Ramp to First Left Turn from Crossroad (ft) 505 Distance to First Full Access Point (ft) 1,017 Distance to First Major Intersection (ft) 1,017 Major Intersection Traffic Control Type (Signal, 2-Way Stop, All- Way Stop) Signal Turn Lanes at Major Intersection (Left, Right, or Both) Left Distance from Major Intersection to Nearest Driveway (ft) 191 Downstream Driveway Information 1st Driveway 2nd Driveway 3rd Driveway 4th Driveway Distance from Exit Ramp to Driveway (Edge of Travel Way) (ft) 334 474 607 687 Distance from Exit Ramp to Driveway (End of Accel Lane, if applicable) (ft) — — — — Distance from Exit Ramp to Driveway (End of Accel Taper, if applicable) (ft) — — — — Driveway Type (Right Turns Only, Rights + Left In, Rights + Left Out, Full Movement) RI & RO Rights + LI Full Movement Full Movement Median Type at Driveway (Raised, Painted, Directional, TWLTL, None) Directional Directional TWLTL TWLTL Driveway Island Present? (Yes or No) No No No No Driveway Width (ft) 29 42 45 32 Driveway Peak (Off-Peak) Volume (vph) 140 (44) 33 (33) 67 (66) 97 (79) Roadway Peak (Off-Peak) Volume (vph) 1,716 (1,357) Upstream Driveway Information 1st Driveway 2nd Driveway 3rd Driveway 4th Driveway Distance from Entrance Ramp to Driveway (Edge of Travel Way) (ft) 211 514 755 808 Distance from Entrance Ramp to Driveway (End of Accel Lane, if applicable) (ft) -59 245 487 539 Distance from Entrance Ramp to Driveway (End of Accel Taper, if applicable) (ft) -148 155 400 454 Driveway Type (Right Turns Only, Rights + Left In, Rights + Left Out, Full Movement) RI & RO Full Movement Full Movement Full Movement Median Type at Driveway (Raised, Painted, Directional, TWLTL, None) Raised None None None Driveway Island Present? (Yes or No) No No No No Driveway Width (ft) 30 39 31 39 Driveway Peak (Off-Peak) Volume (vph) 43 (49) 127 (86) 25 (<10) <10 (<10) Roadway Peak (Off-Peak) Volume (vph) 921 (494)

Arizona (AZ) Interchanges—Site Characteristics A-25 Appendix Table 18. Corridor Information for West Side of AZ #4 Interchange. Crossroad Information AADT/ADT (vehicles/day) 40,500 Posted Speed (mph) 40 Number of Through Lanes 3 Restrictive Median (ft) 394 Continuous or Strategic? Strategic Access Spacing Information from Ramp Terminal Distance from Exit Ramp to First Left Turn from Crossroad (ft) 365 Distance to First Full Access Point (ft) 540 Distance to First Major Intersection (ft) 1,190 Major Intersection Traffic Control Type (Signal, 2-Way Stop, All-Way Stop) Signal Turn Lanes at Major Intersection (Left, Right, or Both) Left Distance from Major Intersection to Nearest Driveway (ft) 270 Downstream Driveway Information 1st Driveway 2nd Driveway 3rd Driveway 4th Driveway Distance from Exit Ramp to Driveway (Edge of Travel Way) (ft) 74 553 613 902 Distance from Exit Ramp to Driveway (End of Accel Lane, if applicable) (ft) — — — — Distance from Exit Ramp to Driveway (End of Accel Taper, if applicable) (ft) — — — — Driveway Type (Right Turns Only, Rights + Left In, Rights + Left Out, Full Movement) RI & RO Full Movement Full Movement RI & RO Median Type at Driveway (Raised, Painted, Directional, TWLTL, None) Raised None TWLTL None Driveway Island Present? (Yes or No) No No No No Driveway Width (ft) 52.70 23.96 38 32 Driveway Peak (Off-Peak) Volume (vph) (22) (<10) (45) (<10) Roadway Peak (Off-Peak) Volume (vph) 865 (565) Upstream Driveway Information 1st Driveway 2nd Driveway 3rd Driveway 4th Driveway Distance from Entrance Ramp to Driveway (Edge of Travel Way) (ft) 372 607 672 734 Distance from Entrance Ramp to Driveway (End of Accel Lane, if applicable) (ft) 101 336 400 463 Distance from Entrance Ramp to Driveway (End of Accel Taper, if applicable) (ft) 15 249 313 376 Driveway Type (Right Turns Only, Rights + Left In, Rights + Left Out, Full Movement) Rights + LI Full Movement Full Movement Full Movement Median Type at Driveway (Raised, Painted, Directional, TWLTL, None) Directional TWLTL TWLTL None Driveway Island Present? (Yes or No) No No No No Driveway Width (ft) 32 47 26 40 Driveway Peak (Off-Peak) Volume (vph) 48 (42) <10 (<10) 37 (17) 38 (30) Roadway Peak (Off-Peak) Volume (vph) 1,728 (1,507)

A-26 Access Management in the Vicinity of Interchanges Appendix Table 19. Collision Type Summary Table for AZ #4 Interchange. Collision Type 2011 2012 2013 Total Average per year Angle 38 49 35 122 41 Backing 1 1 0 2 1 Head-On 0 1 0 1 0 Rear End 24 25 22 71 24 Vehicle Bike 0 5 4 9 3 Vehicle Pedestrian 1 0 0 1 0 Sideswipe Same Direction 7 11 5 23 8 Single Vehicle Crash 3 3 0 6 2 Total 74 95 66 235 78 Appendix Table 20. Crash Severity Summary Table for AZ #4 Interchange. Severity 2011 2012 2013 Total Average per year Fatal Crash (K) 0 0 0 0 0 Incapacitating Injury (A) 1 2 1 4 1 Non-Incapacitating Injury (B) 10 12 2 24 8 Possible Injury (C) 14 24 14 52 17 Property Damage Only (O) 49 57 49 155 52 Total 74 95 66 235 78 Appendix Figure 26. 2011 Crash Overview Schematic for AZ #4.

Arizona (AZ) Interchanges—Site Characteristics A-27 Appendix Figure 28. 2013 Crash Overview Schematic for AZ #4. Appendix Figure 27. 2012 Crash Overview Schematic for AZ #4. Bethany Home Rd

A-28 Access Management in the Vicinity of Interchanges Appendix Figure 29. 2013 Collision Diagram (West End) for AZ #4. Appendix Figure 30. 2013 Collision Diagram (West Side – Middle) for AZ #4.

Arizona (AZ) Interchanges—Site Characteristics A-29 Appendix Figure 31. 2013 Collision Diagram (West Side at Interchange) for AZ #4. Appendix Figure 32. 2013 Collision Diagram (East Side at Interchange) for AZ #4.

A-30 Access Management in the Vicinity of Interchanges Appendix Figure 33. 2013 Collision Diagram (East End) for AZ #4.

Arizona (AZ) Interchanges—Site Characteristics A-31 Interchange AZ #5: SR-51 at Shea Blvd., Phoenix, Arizona Appendix Table 21. General Site Information for AZ #5 Interchange. Latitude 33.582489° Longitude -112.009903° Highway Name SR-51, Piestewa Freeway Milepoint 9 Crossroad Name Shea Rd. City and State Phoenix, AZ Interchange Type SPUI Frontage Roads? No Terminal Control Type Signal Free-Flow Right Turns? Yes, Both Intersections Corridor Endpoint 1 36th St. Corridor Endpoint 2 32nd St. Appendix Figure 34. Aerial Photo of Entire Corridor at AZ #5 Interchange. Map data ©2019 Google

A-32 Access Management in the Vicinity of Interchanges Appendix Table 22. Corridor Information for East Side of AZ #5 Interchange. Crossroad Information AADT/ADT (vehicles/day) 39,800 Posted Speed (mph) 40 Number of Through Lanes 2 Restrictive Median (ft) 270 Continuous or Strategic? Continuous Access Spacing Information from Ramp Terminal Distance from Exit Ramp to First Left Turn from Crossroad (ft) 595 Distance to First Full Access Point (ft) 450 Distance to First Major Intersection (ft) 1,445 Major Intersection Traffic Control Type (Signal, 2-Way Stop, All- Way Stop) Signal Turn Lanes at Major Intersection (Left, Right, or Both) Left Distance from Major Intersection to Nearest Driveway (ft) 292 Downstream Driveway Information 1st Driveway 2nd Driveway 3rd Driveway 4th Driveway Distance from Exit Ramp to Driveway (Edge of Travel Way) (ft) 426 754 1,124 Distance from Exit Ramp to Driveway (End of Accel Lane, if applicable) (ft) — — — Distance from Exit Ramp to Driveway (End of Accel Taper, if applicable) (ft) — — — Driveway Type (Right Turns Only, Rights + Left In, Rights + Left Out, Full Movement) Full Movement Full Movement Full Movement Median Type at Driveway (Raised, Painted, Directional, TWLTL, None) None TWLTL None Driveway Island Present? (Yes or No) No No No Driveway Width (ft) 28 26 28 Driveway Peak (Off-Peak) Volume (vph) <10 (<10) 40 (21) <10 (<10) <10 (<10) Roadway Peak (Off-Peak) Volume (vph) 1,953 (1,243) Upstream Driveway Information 1st Driveway 2nd Driveway 3rd Driveway 4th Driveway Distance from Entrance Ramp to Driveway (Edge of Travel Way) (ft) 180 610 662 777 Distance from Entrance Ramp to Driveway (End of Accel Lane, if applicable) (ft) -39 394 447 565 Distance from Entrance Ramp to Driveway (End of Accel Taper, if applicable) (ft) -264 171 225 344 Driveway Type (Right Turns Only, Rights + Left In, Rights + Left Out, Full Movement) RI & RO Full Movement Full Movement Full Movement Median Type at Driveway (Raised, Painted, Directional, TWLTL, None) Raised TWLTL TWLTL TWLTL Driveway Island Present? (Yes or No) No No No No Driveway Width (ft) 29 26 24 26 Driveway Peak (Off-Peak) Volume (vph) <10 (<10) <10 (<10) <10 (<10) <10 (<10) Roadway Peak (Off-Peak) Volume (vph) 1,275 (841)

Arizona (AZ) Interchanges—Site Characteristics A-33 Appendix Table 23. Corridor Information for West Side of AZ #5 (Phoenix) Interchange. Crossroad Information AADT/ADT (vehicles/day) 10,000 Posted Speed (mph) 40 Number of Through Lanes 3 Restrictive Median (ft) 180 Continuous or Strategic? Continuous Access Spacing Information from Ramp Terminal Distance from Exit Ramp to First Left Turn from Crossroad (ft) 186 Distance to First Full Access Point (ft) 409 Distance to First Major Intersection (ft) 742 Major Intersection Traffic Control Type (Signal, 2-Way Stop, All- Way Stop) Signal Turn Lanes at Major Intersection (Left, Right, or Both) 2 Lefts, Right Distance from Major Intersection to Nearest Driveway (ft) 24 Downstream Driveway Information 1st Driveway 2nd Driveway 3rd Driveway 4th Driveway Distance from Exit Ramp to Driveway (Edge of Travel Way) (ft) 132 230 407 597 Distance from Exit Ramp to Driveway (End of Accel Lane, if applicable) (ft) — — — — Distance from Exit Ramp to Driveway (End of Accel Taper, if applicable) (ft) — — — — Driveway Type (Right Turns Only, Rights + Left In, Rights + Left Out, Full Movement) Rights + LI RI & RO Full Movement RI & RO Median Type at Driveway (Raised, Painted, Directional, TWLTL, None) Directional Painted None None Driveway Island Present? (Yes or No) No No No No Driveway Width (ft) 23 29 38 41 Driveway Peak (Off-Peak) Volume (vph) 13 (45) 16 (<10) 100 (47) <10 (<10) Roadway Peak (Off-Peak) Volume (vph) 465 (260) Upstream Driveway Information 1st Driveway 2nd Driveway 3rd Driveway 4th Driveway Distance from Entrance Ramp to Driveway (Edge of Travel Way) (ft) 105 165 229 345 Distance from Entrance Ramp to Driveway (End of Accel Lane, if applicable) (ft) -118 -57 5 119 Distance from Entrance Ramp to Driveway (End of Accel Taper, if applicable) (ft) — — — — Driveway Type (Right Turns Only, Rights + Left In, Rights + Left Out, Full Movement) RI & RO RI & RO Full Movement Full Movement Median Type at Driveway (Raised, Painted, Directional, TWLTL, None) Raised Directional Directional None Driveway Island Present? (Yes or No) No No No No Driveway Width (ft) 28 29 32 98 Driveway Peak (Off-Peak) Volume (vph) <10 (<10) <10 (<10) 21 (26) <10 (<10) Roadway Peak (Off-Peak) Volume (vph) 728 (431)

A-34 Access Management in the Vicinity of Interchanges Appendix Table 24. Collision Type Summary Table for AZ #5 Interchange. Collision Type 2011 2012 2013 Total Average per year Angle 6 5 8 19 6 Head-On 0 0 0 0 0 Rear End 7 4 3 14 5 Turn 8 9 3 20 7 Sideswipe Same Direction 0 1 4 5 2 Other 3 4 2 9 3 Total 24 23 20 67 22 Appendix Table 25. Crash Severity Summary Table for AZ #5 Interchange. Severity 2011 2012 2013 Total Average per year Fatal Crash (K) 0 0 0 0 0 Incapacitating Injury (A) 0 0 1 1 0 Non-Incapacitating Injury (B) 0 5 2 7 2 Possible Injury (C) 8 1 4 13 4 Property Damage Only (O) 16 17 13 46 15 Total 24 23 20 67 22 Appendix Figure 35. 2011 Crash Overview Schematic for AZ #5.

Arizona (AZ) Interchanges—Site Characteristics A-35 Appendix Figure 36. 2012 Crash Overview Schematic for AZ #5. Appendix Figure 37. 2013 Crash Overview Schematic for AZ #5. N

A-36 Access Management in the Vicinity of Interchanges Appendix Figure 38. 2013 Collision Diagram (West Side) for AZ #5. Appendix Figure 39. 2013 Collision Diagram (East Side) for AZ #5.

Arizona (AZ) Interchanges—Site Characteristics A-37 Interchange AZ #6: I-17 at Happy Valley Rd., Phoenix, Arizona Appendix Table 26. General Site Information for AZ #6 Interchange. Latitude 33.712963° Longitude -112.117358° Highway Name I-17 Milepoint 218 Crossroad Name Happy Valley Rd. City and State Phoenix, AZ Interchange Type Roundabout Frontage Roads? No Terminal Control Type Roundabout Free-Flow Right Turns? Yes, Both Intersections Corridor Endpoint 1 2500 West Corridor Endpoint 2 35th Ave. Appendix Figure 40. Aerial Photo of Entire Corridor at AZ #6 Interchange. Map data ©2019 Google

A-38 Access Management in the Vicinity of Interchanges Appendix Table 27. Corridor Information for East Side of AZ #6 Interchange. Crossroad Information AADT/ADT (vehicles/day) 15,600 Posted Speed (mph) 45 Number of Through Lanes 3 Restrictive Median (ft) 740 Continuous or Strategic? Continuous Access Spacing Information from Ramp Terminal Distance from Exit Ramp to First Left Turn from Crossroad (ft) 722 Distance to First Full Access Point (ft) 722 Distance to First Major Intersection (ft) 722 Major Intersection Traffic Control Type (Signal, 2-Way Stop, All- Way Stop) Signal Turn Lanes at Major Intersection (Left, Right, or Both) 2 Left, Right Distance from Major Intersection to Nearest Driveway (ft) 347 Downstream Driveway Information 1st Driveway 2nd Driveway 3rd Driveway 4th Driveway Distance from Exit Ramp to Driveway (Edge of Travel Way) (ft) 328 Distance from Exit Ramp to Driveway (End of Accel Lane, if applicable) (ft) — Distance from Exit Ramp to Driveway (End of Accel Taper, if applicable) (ft) — Driveway Type (Right Turns Only, Rights + Left In, Rights + Left Out, Full Movement) RI & RO Median Type at Driveway (Raised, Painted, Directional) Raised Driveway Island Present? (Yes or No) No Driveway Width (ft) 38 Driveway Peak (Off-Peak) Volume (vph) 207 (95) Roadway Peak (Off-Peak) Volume (vph) 589 (1,011) Upstream Driveway Information 1st Driveway 2nd Driveway 3rd Driveway 4th Driveway Distance from Entrance Ramp to Driveway (Edge of Travel Way) (ft) 328 Distance from Entrance Ramp to Driveway (End of Accel Lane, if applicable) (ft) 156 Distance from Entrance Ramp to Driveway (End of Accel Taper, if applicable) (ft) — Driveway Type (Right Turns Only, Rights + Left In, Rights + Left Out, Full Movement) RI & RO Median Type at Driveway (Raised, Painted, Directional, TWLTL, None) Raised Driveway Island Present? (Yes or No) No Driveway Width (ft) 29 Driveway Peak (Off-Peak) Volume (vph) 116 (15) Roadway Peak (Off-Peak) Volume (vph) 970 (345)

Arizona (AZ) Interchanges—Site Characteristics A-39 Appendix Table 28. Corridor Information for West Side of AZ #6 Interchange. Crossroad Information AADT/ADT (vehicles/day) 33,400 Posted Speed (mph) 45 Number of Through Lanes 2 Restrictive Median (ft) 173 Continuous or Strategic? Continuous Access Spacing Information from Ramp Terminal Distance from Exit Ramp to First Left Turn from Crossroad (ft) 350 Distance to First Full Access Point (ft) 350 Distance to First Major Intersection (ft) >0.5 mile Major Intersection Traffic Control Type (Signal, 2-Way Stop, All-Way Stop) Signal Turn Lanes at Major Intersection (Left, Right, or Both) Left Distance from Major Intersection to Nearest Driveway (ft) 1,903 Downstream Driveway Information 1st Driveway 2nd Driveway 3rd Driveway 4th Driveway Distance from Exit Ramp to Driveway (Edge of Travel Way) (ft) 560 Distance from Exit Ramp to Driveway (End of Accel Lane, if applicable) (ft) — Distance from Exit Ramp to Driveway (End of Accel Taper, if applicable) (ft) — Driveway Type (Right Turns Only, Rights + Left In, Rights + Left Out, Full Movement) Full Movement Median Type at Driveway (Raised, Painted, Directional, TWLTL, None) TWLTL Driveway Island Present? (Yes or No) No Driveway Width (ft) 37 Driveway Peak (Off-Peak) Volume (vph) <10 (<10) Roadway Peak (Off-Peak) Volume (vph) 1,565 (484) Upstream Driveway Information 1st Driveway 2nd Driveway 3rd Driveway 4th Driveway Distance from Entrance Ramp to Driveway (Edge of Travel Way) (ft) 374 985 Distance from Entrance Ramp to Driveway (End of Accel Lane, if applicable) (ft) 70 680 Distance from Entrance Ramp to Driveway (End of Accel Taper, if applicable) (ft) — — Driveway Type (Right Turns Only, Rights + Left In, Rights + Left Out, Full Movement) Full Movement Full Movement Median Type at Driveway (Raised, Painted, Directional, TWLTL, None) None TWLTL

A-40 Access Management in the Vicinity of Interchanges Driveway Island Present? (Yes or No) No No Driveway Width (ft) 37 62 Driveway Peak (Off-Peak) Volume (vph) 43 (61) < 10 (< 10) Roadway Peak (Off-Peak) Volume (vph) 1,081 (1,927) Appendix Table 29. Collision Type Summary Table for AZ #6 Interchange. Collision Type 2011 2012 2013 Total Average per year Angle 18 12 1 31 10 Backing 0 0 0 0 0 Head-On 0 1 0 1 0 Rear End 6 8 3 17 6 Sideswipe Same Direction 21 15 11 47 16 Single Vehicle Crash 3 4 4 11 4 Total 48 40 19 107 36 Appendix Table 30. Crash Severity Summary Table for AZ #6 Interchange. Severity 2011 2012 2013 Total Average per year Fatal Crash (K) 0 0 0 0 0 Incapacitating Injury (A) 1 0 2 3 1 Non-Incapacitating Injury (B) 5 2 0 7 2 Possible Injury (C) 5 7 3 15 5 Property Damage Only (O) 37 31 14 82 27 Total 48 40 19 107 36

Arizona (AZ) Interchanges—Site Characteristics A-41 Appendix Figure 41. 2011 Crash Overview Schematic for AZ #6. Appendix Figure 42. 2012 Crash Overview Schematic for AZ #6.

A-42 Access Management in the Vicinity of Interchanges Appendix Figure 43. 2013 Crash Overview Schematic for AZ #6. Appendix Figure 44. 2013 Collision Diagram (West End) for AZ #6.

Arizona (AZ) Interchanges—Site Characteristics A-43 Appendix Figure 45. 2013 Collision Diagram (West Interchange Roundabout) for AZ #6. Appendix Figure 46. 2013 Collision Diagram (East Interchange Roundabout) for AZ #6.

A-44 Access Management in the Vicinity of Interchanges Appendix Figure 47. 2013 Collision Diagram (East End) for AZ #6.