Passenger Turning Path - 180°

The 180° turning path of a passenger vehicle measures the minimum possible turning radius for use when designing spaces for u-turns or turn-arounds within streets, parking lots, drop-offs, or service areas. Measuring the inner and outer radii of the 180° turn, a minimum inner radius of 14’5” | 4.39 m and minimum outer radius between 24’-25’6” | 7.31-7.77 m should be provided throughout the turn. Turning paths can use either curb-to-curb or wall-to-wall measurements based on whether the turning circles are calculated based on the outer tire or the outer front overhang. Additional clearances should be provided whenever possible to accommodate a larger variety of car sizes and driver abilities.

The 180° turning path of a passenger vehicle measures the minimum possible turning radius for use when designing spaces for u-turns or turn-arounds within streets, parking lots, drop-offs, or service areas. Measuring the inner and outer radii of the 180° turn, a minimum inner radius of 14’5” | 4.39 m and minimum outer radius between 24’-25’6” | 7.31-7.77 m should be provided throughout the turn. Turning paths can use either curb-to-curb or wall-to-wall measurements based on whether the turning circles are calculated based on the outer tire or the outer front overhang. Additional clearances should be provided whenever possible to accommodate a larger variety of car sizes and driver abilities.

Common Questions
What is the minimum inside turning radius required for a passenger vehicle making a 180° turn?
A minimum inner turning radius of 14’5” | 4.39 m should be provided for a passenger vehicle making a 180° turn.
What is the minimum outside turning radius required for a passenger vehicle making a 180° turn?
The outer turning radius necessary for a passenger vehicle making a a 180° turn should be between at least 24’-25’6” | 7.31-7.77 m based on the circular path made by the front overhang of the car. Additional space should be provided whenever possible.
How big is a typical passenger vehicle?
The average mid-size passenger car, typically a sedan, has an overall length of 15’10” | 4.83 m and a width of 6’ | 1.83 m.

Details

*Under Development*

Outer Radius: 24’-25’6” | 7.31-7.77 m
Inner Radius: 14’5” | 4.39 m

Vehicle Wheelbase: 11’ | 3.35 m
Vehicle Length: 19’ | 5.79 m
Vehicle Width: 7’ | 2.13 m

Drawings include:
Passenger Vehicle Turning Path 180° plan

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