Single-Unit Truck | Bus - 20' WB

The turning path of a Single-Unit Truck or Bus measures the minimum possible turning radius necessary for performing a u-turn in a vehicle with a 20’ (6.1 m) wheelbase.

Measuring the inner and outer radii of the 180° turn, a minimum inner radius of 28’4” (8.64 m) and minimum outer radius between 42’-43.5’ (12.8-13.26 m) should be provided for single-unit trucks and buses.

What is the minimum inside turning radius required for a bus?
A minimum inner turning radius of 28’4” | 8.64 m should be provided for a bus or single-unit truck making a 180° turn.

What is the minimum outside turning radius required for a bus making a 180° turn?
The outer turning radius necessary for a bus or single-unit truck making a a 180° turn should be between at least 42’-43.5’ | 12.8-13.26 m.
How big is a typical city bus?
The average city bus varies in length between 35’-45’ | 10.7-13.7 m with widths between 8’-8’6” | 2.4-.6 m.


*Under Development*


Outer Radius: 42’-43.5’ | 12.8-13.26 m
Inner Radius: 28’4” | 8.64 m

Vehicle Wheelbase: 20’ | 6.1 m
Vehicle Length: 30’ | 9.15 m
Vehicle Width: 8’ | 2.44 m



Drawings include:
Single Unit Truck | Buses (20' Wheelbase) Turning Paths plan

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The turning radius, or turning path, of a vehicle is the smallest circular turn that it can make. Measuring the diameters of the inner and outer turning circles, turning paths of vehicles are calculated as standards used when designing roads, parking layouts, loading, and public service areas.

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