What are crossing the road and crossing the road?

In road design, two or more roads often cross, especially in interchange design, it is inevitable to meet the determination of three-dimensional position relationship and the choice of ramp intersection or main line intersection. Whether to cross or underpass the main highway is usually determined according to the terrain or highway type.

Undercrossing the highway is conducive to traffic warning. When the driver drives into the intersection, he can vaguely see the overpass ahead and clearly see the road at the intersection, so that he can warn the driver in advance that there may be an overpass ahead. When the underground passage passes under the ground intersection, there is no elevation warning.

Extended data:

Precautions:

1. Use the copy route function to select the route of the ground road, and copy the route of the overpass according to the starting and ending range of the overpass. You can also create the route of the overpass in other ways.

2. Use the "Structure Definition" or "Bridge Definition" command to define the bridge crossing at the intersection.

3. Design the longitudinal section of the overpass route: design a new longitudinal section, and pay attention to the clearance limit under the overpass longitudinal section.

4. Generate the road model of the overpass route: Create the road according to the cross section, route and design profile (you cannot specify the definition of left and right slopes and the definition of left and right retaining walls).

Baidu Encyclopedia-Urban Road Intersection

Baidu Encyclopedia-Xiachuan Record