1 - HKU Libraries

T.P.D.MV.2.2
(Al/2001)
2.2.3 Turning Circles
2.2.3.1 Diagrams 2.2.3.1 - 2.2.3.8 and 2.2.3.11 show dimensions of turning circles for various types of
vehicles.
2.2.3.2 In TRRL Report LR 608 "Road Width Requirements of Commercial Vehicles", calculations as
to road widths required for different types of vehicles have been determined.
2.2.3.3 A further means for determining the swept area of a turning vehicle is the "Schneider" method
and is summarised in Diagrams 2.2.3.9 and 2.2.3.10. This method determines the turning area
of a vehicle by plotting the progressive position of the vehicle and whilst not precise is probably
sufficiently accurate for assessing road width requirements. It can be used for any radius of
turn.