Expand an arm and click Exit in the left-hand pane. The Exit page is displayed.
The Design Speed can affect the turning capabilities of the vehicle if you have limited turning by lock-to-lock time. At higher speeds, vehicles will not be able to negotiate tight turns.
Select the Number of Lanes from the drop-down list.
The Lane Width is measured between centres of road markings. The innermost and outermost lane widths are measured to the nearside and offside definition lines respectively.
The Nominal Overall Road Width is calculated as the Number of Lanes multiplied by the Lane Width.
The Nearside Radius is the radius of the nearside definition line at the splitter.
Select Equal Spacing Between Lanes to even out the lane width.
The Longer Inner Lane Line defines which lane is longer (outer/inner) when adding extra lanes.
If this exit is not relevant to flow calculations, e.g. it might be a service road, then select Ignore in Capacity Calculations.
In all cases the Max and Min values represent the limiting values from the adopted design standard.