What does the term "entrance ramp" refer to?

The term "entrance ramp" refers to a section of roadway designed to allow vehicles to enter a highway or interstate. Specifically, it serves as a transitional area where drivers can gain speed and evaluate zone conditions before merging onto the faster-moving traffic of the highway. This area is crucial for allowing drivers to assess the flow of traffic, make necessary changes, and ensure a safe merge into higher speed lanes.

The design of entrance ramps typically incorporates a gradual incline and a longer length, giving drivers the opportunity to accelerate to a speed that matches highway traffic, thereby facilitating a smoother and safer entry into the highway system. This characteristic of entrance ramps distinguishes them from other road features, which may have different purposes, such as resting areas or dedicated bike lanes.