To do this, use the Speed Limits tool to create a speed gradient along the highway ramp. These speed changes help avoid collisions between traffic travelling at different speeds. Exits should have deceleration lanes which allow vehicles to slow down as they leave the highway.Entries should have acceleration lanes which allow traffic to speed up as it joins the highway.For example, if a 3 lane highway has a 1 lane exit ramp, the remaining highway should only have 2 lanes. The junction on the right is sub-optimal - 4 lanes enter, but only 3 lanes leave.The junction on the left is optimal - 4 lanes enter, and 4 lanes leave.However, for best results you should make the following additional customisations.Īt junctions, the number of incoming lanes should be equal to the number of outgoing lanes: Once the feature is enabled, it applies to all highways automatically.
Vehicles are forced to stay in their lane when entering or exiting the highwayĪctivate Enable highway specific lane merging/splitting rules in the Policies settings.Vehicles can only change one lane at a time (emergency vehicles are exempt from this rule).This feature implements two key changes to the way your highways work: Use this feature to make highway traffic more realistic.
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