A proposed interchange between a freeway and a secondary road is to have the sec
ID: 1713823 • Letter: A
Question
A proposed interchange between a freeway and a secondary road is to have the secondary road overpass the freeway. What is the main general advantage of this configuration?
(A) The cost of elevating a secondary road is always significantly less than the cost of elevating a freeway.
(B) Traffic lanes on the underpassing freeway can be protected by guiderails close to the edge of the roadway.
(C) The freeway can be depressed below grade, making it easier to control drainage.
(D) Ramp terminals at the secondary roadway are usually more visible as drivers leave the major roadway.
Explanation / Answer
The correct answer is (A) The cost of elevating a secondary road is always significantly less than the cost of elevating a freeway.