Future truck populations are not known and can The current truck population has been documentedįrom existing data sources and field data collection (seeĬhapter 3). Geometric design of both current and future truck popula. This research was charged with assessing the effect on The text of potentialįuture Green Book changes is presented in Appendix F. The Green Book could provide guidance to assist design-Įrs in selecting trucks as design vehicles in other instances. Industrialized streets that carry high volumes of trafficĪnd/or that provide local access for large trucks. Roads and for other intersections on state highways and Sections of freeway ramp terminals with arterial cross. The minimum size design vehicle considered for inter. The school bus may also be appropriateįor the design of some subdivision street intersections. Low-volume county highways and township/local roads Sengers) or a conventional school bus (65 passengers) mayīe used for the design of intersections of highways with ¢ Depending on expected usage, a large school bus (84 pas. Nated bus routes and that have relatively few large trucks Highway intersections with city streets that are desig. ¢ A city transit bus may be used in the design of state ¢ A single-unit truck may be used for intersection design
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Generator is a parking lot or series of parking lots. ¢ A passenger car may be selected when the main traffic To designers on the appropriate selection of design vehicles. How-Įver, the Green Book does provide some general guidelines Is familiar with local highway and traffic conditions. This is, and should be, a choice left to the designer who Should be selected for the design of any specific highway proj-Įct. The Green Book does not specify which design vehicle Trucks that may merit inclusion are discussed. The appropriateness for the current and future truckįleet of each of the truck design vehicles, shown in Tables 19Īnd 20, are discussed below. Green Book Exhibit 2-2, presents their minimum turning Table 19, based on Green Book Exhibit 2-1, presents theĭimensions of the design vehicles, and Table 20, based on ¢ Turnpike Double-Semitrailer/Trailer, WB-33D [WB. The trucks addressed in the Green Book are as follows: The 2001 Green Book presents design vehicle dimensionsĪnd turning radii for 19 design vehicles, including 8 trucks. Vehicles, as well as nearly all vehicles in classes composed Roadway to accommodate a specific design vehicle shouldĪccommodate most vehicles in the same class as the design Physical dimensions and a larger minimum turning radius A design vehicle is not intended to represent an aver-Īge or typical vehicle in its class but, rather, to have larger Sented in the Green Book to represent classes or categories of Various sizes that use the highway represent a key control in The physical characteristics and proportions of vehicles of In design vehicles and documents the reasons for these rec. This chapter also describes the recommended changes Vehicles for consideration in future editions of the Greenīook. Green Book and presents recommended changes to the design This chapter reviews the design vehicles used in the 2001 Because it is UNCORRECTED material, please consider the following text as a useful but insufficient proxy for the authoritative book pages. Below is the uncorrected machine-read text of this chapter, intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text of each book.
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