21 A freeway crosses a major arterial at an interchange on an overpass structure

Question

21 A freeway crosses a major arterial at an interchange on an overpass structure. An advantage of this configuration is that O (A) the arterial is easily seen by approaching drvers on the freeway, alerting them to possible interchange ramps (B) the crossing structure has no limitation to vertical clearance for the freeway O (C) the profiles of exit ramps up to the freeway encourage drivers to decrease speed as they enter the freeway O (D) ramp terminals are usually more visible as drivers leave the major roadway

Explanation / Answer

A freeway crosses a major arterial at an interchange on an overpass structe.An advantage of this configuration is that the profiles of exit ramps up to the freeway encourage drivers to decrease speed as they enter the freeway

Because of high ramp or slip road is a short section of road which allows vehicles to enter or exit a controlled-access highway(freeway or motorway). A directional ramp always tends toward the desired direction of travel.This means that a ramp that makes a left turn exits form the left side of the road way(a left exit).Left directional ramps are relatively uncommon as the left lane is usually reserved for high-speed through traffic.Ramps for a right turn are almost always right directional ramps

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