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APPENDIX F
Pages 169-180

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From page 169...
... lIYPOTEIETICAL DATA SETS To provide a general comparison oftraffic-actuated signal timing and delay prediction between HCM Chapter 9 Appendix II method and proposed analytical model, several hypothetical data sets based on four HCM Chanter 9 sample problems (SPI, SP3, SP4 and SP51 and seven hv~othetical examples fit ~ TT~^ AT'-~ TV'- A TT'-r TT'-~ 1 It__ · ~ · <~1, Am, Am, Am, Am, ~o and am/' were used. Chinese data sets were selected from a group of sample problem data sets prepared bv the Signalized Intersections Subcommittee ofthe Hi~hw.av in- - ~ ~ r -- r~-~~ I ~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~ ~~ ~ ~ ~ ~ J Capacity Committee.
From page 170...
... Intersection layout for SP4 Figure F-5. Intersection layout for HE2 Appendix F: Page 2 Figure F-2.
From page 171...
... The hypothetical data sets cover eight different cases of phase sequences. The following figures show the cases in the north-south direction: Figure F-l I: Case I: phase sequence for simple permitted turns Figure F-12: Case 2: phase sequence for leading green Figure F-]
From page 172...
... LT phase with leading green Appendix F: Page 4 \ ~ ~ 7 8 Figure F-16. Leading dual left turns
From page 173...
... Compound left turn protection was intensively evaluated at approaches with an exclusive left turn lane. The traffic volumes and actuated parameter range used in the hypothetical data sets are shown as follows: Traffic volumes per lane: Minimum green time: · maximum green time: Detector length: Allowable gap: Ideal saturation flow rate: 50vph-350vph 50 vph - 800 vph 5 see- 15 see 10 see - 20 see 10 see- 30 see 30 see - 80 see 25 tic - 30 fit 2 see - 3.5 see 1800 vphgp!
From page 174...
... 2 TEST(1-~) SP4 Case 6 · Exclusive LT lane · NB and SB identical .
From page 175...
... for NB and SB HE6 Case 5 · Based on field data SP4 Cases 4 & 5 . Exclusive LT lane · Only one lane for NB and SB in data set 6 · Case 4 for data sets 2, 4, 5 & 6 and case 5 for 1 & 3 18 19 20 SP4-2 SP4-3 MUSEUM(0 1-02)
From page 176...
... The minimum green time was set at 16.5 seconds for through phases and 10 seconds for leR turns. The maximum Keen time was set at 45 seconds for through phases and 15 seconds for left turns on Museum Road.
From page 177...
... NET SIM produces very detailed tables displaying several performance measures, including intermediate values. It does not, however, provide sufficient information on the operation of the controller itself in the standard output tables.
From page 178...
... In this study, the controller dwell time was used and the phase times were computed accordingly. Delay estimates can be obtained from the NETSIM output file.
From page 179...
... and P-S Lin, NET SIM Controller Operation Postprocessor (A Computer Software) , Transportation Research Center, University of Florida, Gainesville, June 1995.


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