The Bridge or Fly over Exit Points

The Bridge or Fly over Exit Points

The long bridges that span 50 - 60 KMs or even more than 10 KMs length results in pile up of traffic at the exit points.  The exit point lanes are limited in strength and is matched to the capacity of the width of the road.  These bridge exit points can be designed such way that the payment lanes are increased near the exit lanes that allows traffic flow for few meters.  Each of such lanes should be designed to integrate the traffic flow from the left or right most lane.  This leaves the other lanes to be used for non stop traffic flow.  The left exit lanes could be designed to curve the traffic out of the road by few hundred 500 metres and the final exits lanes can span for 2 KMs.  That makes the users to exit at 4 different points, overall 12 lanes, further extension possible as these lanes curves out, and let's say they are designed to carry 3 lanes of 500 metres of traffic out of the main road, then pay the toll charges and then further they join the traffic to the main road in another 500 metres to ensure their speed matches the traffic flow.

The traffic on the bridge nearing these traffic can be guided with signal, map integration, lane traffic indicators shall guide the users to select a exit lane intelligently or automatically flash the lane number of exit, sychs the users map with FastTag account details, to display lane number in the map and guide the driver to the appropriate exit lane automatically. 

Such design can be based on number of peak vehicle usage anticipated and overall wait time should not be greater than 5 minutes except for accident scenarios. The number of exit lanes should be extendable in the future to support more capacity.

Hope such plan is considered.