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Pages 82-113

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From page 82...
... 82 This chapter documents the turning performance of the updated design vehicles presented in Chapter 5. The chapter begins by discussing the determination of turning performance.
From page 83...
... Turning Performance of Updated Design Vehicles 83 turning maneuvers by larger vehicles, offtracking does not fully develop. In particular, the offtracking in a 90-degree turn (such as a right or left turn at an intersection)
From page 84...
... 84 Highway and Street Design Vehicles: An Update This difference has limited implications for intersection design because, except for turns from one one-way street to another, the actual turning path radius used in left-turn maneuvers at intersections is typically larger than the actual turning radius used in right-turn maneuvers at intersections. Furthermore, the 3.6-ft difference in minimum turning paths between left and right turns corresponds to a difference of only 1.8 ft from the centerline turning radius.
From page 85...
... Design vehicle type Passenger car (sedan) Pickup truck Singleunit truck (two axles)
From page 86...
... 86 Highway and Street Design Vehicles: An Update light truck and a typical intercity bus and found good agreement between the software-generated and field-measured turning radii for both vehicle types. 6.2.1 Passenger Vehicles Figures 56 and 57 present turning templates for the recommended P and PU design vehicles for potential use in the Green Book.
From page 87...
... Turning Performance of Updated Design Vehicles 87 Figure 56. Turning template for recommended passenger car (P)
From page 88...
... 88 Highway and Street Design Vehicles: An Update Figure 57. Turning template for recommended pickup truck (PU)
From page 89...
... Turning Performance of Updated Design Vehicles 89 Figure 58. Turning template for recommended single-unit truck (two-axle)
From page 90...
... 90 Highway and Street Design Vehicles: An Update Figure 59. Turning template for recommended single-unit truck (three-axle)
From page 91...
... Figure 60. Turning template for recommended intermediate semitrailer (WB-47)
From page 92...
... 92 Highway and Street Design Vehicles: An Update Figure 61. Turning template for recommended interstate semitrailer (WB-64)
From page 93...
... Turning Performance of Updated Design Vehicles 93 Figure 62. Turning template for recommended interstate semitrailer (WB-69)
From page 94...
... 94 Highway and Street Design Vehicles: An Update Figure 63. Turning template for recommended double bottom semitrailer/trailer (WB-71D)
From page 95...
... Figure 64. Turning template for recommended Rocky Mountain double semitrailer/trailer (WB-96D)
From page 96...
... 96 Highway and Street Design Vehicles: An Update Figure 65. Turning template for recommended triple semitrailer/trailers (WB-103T)
From page 97...
... Turning Performance of Updated Design Vehicles 97 Figure 66. Turning template for recommended turnpike double semitrailer/trailer (WB-118D)
From page 98...
... 98 Highway and Street Design Vehicles: An Update Figure 67. Turning template for recommended intercity bus (BUS-40)
From page 99...
... Turning Performance of Updated Design Vehicles 99 Figure 68. Turning template for recommended intercity bus (BUS-45)
From page 100...
... 100 Highway and Street Design Vehicles: An Update Figure 69. Turning template for recommended city transit bus (CITY-BUS)
From page 101...
... Turning Performance of Updated Design Vehicles 101 Figure 70. Turning template for recommended conventional school bus (65-passenger)
From page 102...
... 102 Highway and Street Design Vehicles: An Update Figure 71. Turning template for recommended large school bus (84-passenger)
From page 103...
... Turning Performance of Updated Design Vehicles 103 Figure 72. Turning template for recommended articulated bus (A-BUS)
From page 104...
... 104 Highway and Street Design Vehicles: An Update 6.2.5 Recreational Vehicles Figures 73 through 76 present turning templates for the four recommended RV design vehicles (i.e., MH, PU/T, PU/B, and MH/B, respectively) for potential use in the Green Book.
From page 105...
... Turning Performance of Updated Design Vehicles 105 Figure 73. Turning template for recommended motor home (MH)
From page 106...
... 106 Highway and Street Design Vehicles: An Update Figure 74. Turning template for recommended pickup truck and travel trailer (PU/T)
From page 107...
... Turning Performance of Updated Design Vehicles 107 Figure 75. Turning template for recommended pickup truck and boat trailer (PU/B)
From page 108...
... 108 Highway and Street Design Vehicles: An Update Figure 76. Turning template for recommended motor home and boat trailer (MH/B)
From page 109...
... Turning Performance of Updated Design Vehicles 109 6.5 Rear Swingout As a vehicle makes a turning maneuver, the outside rear of the vehicle may briefly track outside the swept path defined by the outside front corner of the vehicle. This is known as rear swingout.
From page 110...
... 110 Highway and Street Design Vehicles: An Update The data source for the fire truck dimensions: Transoft Solutions. Figure 77.
From page 111...
... Turning Performance of Updated Design Vehicles 111 The data source for the garbage collection truck dimensions: Transoft Solutions. Figure 78.
From page 112...
... 112 Highway and Street Design Vehicles: An Update The data source for the garbage collection truck dimensions: Transoft Solutions. Figure 79.
From page 113...
... Turning Performance of Updated Design Vehicles 113 in the AutoTURN software library. The figures illustrate that these garbage collection trucks have substantially less turning radius and swept path width than the recommended SU-33 design vehicle (see Figure 58)

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