What does the ramp on the expressway mean?

Expressway ramp is the road on the right side of expressway exit or entrance (usually at 1 50-200m):1,which is also called approach road. It is an engineering term and usually refers to a small section of land bridge/ramp, providing access for vehicles to major roads, viaducts, bridges and traffic tunnels. ) and adjacent auxiliary roads, or other main lines. It is the main traffic building that constitutes the road interchange;

2. In T-shaped (Y-shaped) interchange, the intersecting main road is usually defined as the main line, the intersecting secondary road is defined as the lead, and the line connecting the lead and the main line is called the ramp;

3. The so-called "ramp" at the intersection refers to a one-way turning road connecting the upper and lower interchanges at the interchange. The curve elements of ramp are also composed of straight line segment, circular curve segment and transition curve segment.

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