A crossing between two transportation rights-of-way that is separated vertically. A transit right-of-way may be fully grade-separated or partially grade-separated.
The separation of pedestrians from other road users by a different in vertical level, typically an overbridge or an underpass/subway.
An intersection that is no longer at-grade (roads cross at the same level) because one road passes over the other on a bridge. Adding ramps to a grade separation, providing access from one road to another, creates an interchange.
a crossing that uses an underpass or overpass
a structure, including its approaches, that allows road and railway traffic to cross each other at different elevations
The vertical separation of cyclists by a bridge or underpass across a roadway, railway line etc. It contrasts with an atgrade intersection or level crossing.
A crossing of a roadway and a railroad at different elevations, such as a bridge structure carrying the highway over the railroad or vice versa. Private Crossing - An at-grade crossing where the road is privately owned, and is intended for use by the owner or by the owner's licensees and invitees. It is not generally intended for public use, and it is not maintained by a public authority. Private crossings usually are found on farms and in industrial/ commercial complexes, or they provide access to recreational and residential areas. Public Crossing - A highway-rail grade crossing where the intersecting roadway is under the jurisdiction of, and maintained by, a public authority and open to the traveling public.
Use of different levels. Grade separation of north and south bound lanes at different levels can eliminate oncoming headlight glare and preserve a scenic view. Grade separation of intersections carries traffic over or under a highway, making it "limited access."
Crossings at different levels by which intersecting roadways, railroad tracks, pedestrian walkways, bike paths or other structures avoid conflicting traffic operations.
Vertical isolation of travel ways through use of a structure so that traffic crosses without interference. Spatial separation of two facilities.
Grade separation is the process of aligning a junction of two or more transport axes at different heights (grades) such that they do not disrupt the flow of traffic on one another when they cross. This is achieved by building bridges over or tunnels under the crossing site, allowing roads, railways and canals to pass another without interrupting the flow of traffic.
