The roundabout must be capable of accommodating appropriate vehicles. You can edit or delete existing design vehicles.
Expand Swept Path Analysis and select a vehicle in the left hand pane. The Design Vehicle page is displayed.
The design vehicle Overall Width is the width of the design vehicle at its widest point.
The design vehicle Effective Front Overhang is the distance from the effective front axle to the front-most point on the body.
The design vehicle Effective Rear Overhang is the distance from the effective rear axle to the rear-most point on the body.
The design vehicle Tractor Effective Wheelbase is the distance between the effective front and rear tractor axles.
The design vehicle Trailer Effective Wheelbase is the distance between the trailer effective front and rear axles or between the kingpin and the effective rear axle.
The design vehicle Effective Kingpin Offset is the distance from the effective rear axle back to the kingpin. If the kingpin is in front of the effective rear axle then the distance is negative.
The design vehicle Drawbar Length is the length of the drawbar (if any) between pivot points.
In all cases the Max and Min values represent the limiting values from the adopted design standard and the Default value will be used when the roundabout is first placed. A default value MUST be provided but Max and Min may be blank if there is no limiting value.