893 - Logical Reasoning

If highways were restricted to cars and only those truck with capacity of less than 8 tons, most the truck traffic would be forced to run outside highway. Such a reduction in the amount of truck traffic would reduce the risk of collision in highway.

Question: 1 The conclusion draw in the first sentence depends on which of the following assumptions?

1. The roads outside highway would be as convenient as highway for most drivers of truck.
2. Most roads outside highways are not ready to handle truck traffic.
3. Most trucks that are currently running in highway have a capacity of more than 8 tons.
4. Cars are at greater risk of becoming involved in collisions than are trucks.
5. A reduction in the risk of collision would eventually lead to increases in car traffic.

Question:2 Which of the following, if true, would most strengthen the conclusion drawn in the second sentence?

1. Cars with a capacity of more than 8 tons are already excluded outside highways.
2. Highways are experiencing overcrowded traffic primarily because of sharp increases in car traffic.
3. Many drivers of trucks would rather buy truck with a capacity of less than 8 tons than be excluded from highways.
4. The number of collisions that occur near highways has decreased in recent years.
5. Trucks that have a capacity of more than 8 tons cause a disproportionately large number of collisions in highways.