Question

26-1. At an urban interchange between a freeway and major arterial, major movements involve heavy left-turning flows from both freeway directions. If existing buildings make it difficult to acquire sig- nificant increases to the right-of-way, what type of interchange would you recommend, and why?

Answer 1

Interchange (roads) helps the motorists in diverting from arterial or sub arterial roads to the freeways or express ways. There are many types of interchanges. But we have to adopt only few particular interchanges as per our requirement. Otherwise we'll face many problems while riding and obstructions while diverting. So we need to choose and design the certain interchange with proper care.

As per given problem, partial or complete cloverleafs maybe the best options. The space should be given in between the buildings and the roads.

1.In the partial cloverleaf interchange, some part of the structure should be designed one the ramps.

2.By providing the ramps, the vehicular traffic one the actual road can be avoided. These ramps must be constructed at a proper height without disturbing the surrounding buildings.

3.This type of interchanges can avoid the destructions occured by the traffic. In the given problem, the major movements involve the left turning flows.

4. By providing the ramps a proper heights, we can make much right of way for the existing buildings.

5. And these buildings will not be disturbed even in the critical traffic jams.

6. We can provide the walkways, at the both sides of the roads. But we must provide the steel or concrete decks to the walkways to reject the riding of motor cyclists.

7. The complete cloverleaf interchange allows free-flow between both roads, involving one road terminating on the other.

8. Actually,the common use of this interchange is for highways terminating at different junctions or intersections.

9.But, this interchange allows for a fast-paced traffic flow with uninterrupted turning points for on and off ramps.

10.For this reason, we can adopt this interchange to avoid the problems while the buildings require much right-of-way.

11.Traffic analysis shows that this design is adequate for the volumes from residential complex and industrial facility.

12. But, these two interchanges must be replaced with either signalized interchanges or higher-capacity directional interchanges with flyovers.

13.Without providing them, we can't control the future problems easily. However, these two types can be adopted for the given situation.