IMAT 2015 Q14 [Conclusion | Congestion]

Although it is sometimes suggested that the congestion caused by the bunching of cars on motorways could be eased by increasing the speed limit to 150 km/hr, such an increase would not be a good thing. An estimated 35 per cent of drivers exceed the speed limit by 20 km/hr and would continue to do so if the limit were raised. Since bunching is caused by speeding drivers trying to pass those who observe the speed limit, raising the limit to 150 km/hr would result in the same amount of congestion, but at an increased speed. Moreover, a higher speed limit would encourage all drivers to drive faster, and thus would increase the existing danger from those who drive too close to the car in front.

Which one of the following best expresses the main conclusion of the above argument?

A. Congestion on motorways is caused by speeding drivers trying to pass those who observe the speed limit.

B. A higher speed limit on motorways would encourage all drivers to drive faster.

C. An increase in the speed limit would increase the existing danger from those drivers who drive too close.

D. Raising the speed limit to 150 km/hr would not reduce congestion on motorways.

E. It would not be a good thing to increase the speed limit to 150 km/hr.