b-99-vehicle
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B-99 vehicle
HB50
motor car whose physical dimensions represent the 99.8th percentile class of all cars and light vans on the road
The 1979 Ford LTD was found to represent the 99.8th percentile vehicle as regards overall length, width and turning path characteristics. Design dimensions based on the B99 vehicle are appropriate to all locations where failure of a vehicle to be able to physically fit into the facility would occasion intolerable congestion and possible hazard. Such locations include all access driveways, ramps, circulation roadways and circulation aisles, unless there are special circumstances of severe space limitation coupled with relatively low traffic volumes in which case the B85 vehicle dimensions may be used. Design dimensions are derived from base dimensions by the incorporation of operating clearances.