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What is Rotary Intersection of Roads?
The rotary intersection of roads is also called as traffic rotary which is nothing but enlarged intersection of roads where vehicles cross roads or change their direction without stopping. All vehicles coming from different roads move in single direction around the central island and diverges into required exit.Design Factors for Rotary Intersection of Roads
There are many factors to be considered while designing traffic rotary as follows:- Design speed
- Shape of central island
- Radius of rotary roadway
- Weaving angle and weaving distance
- Width of carriageway at entry and exit
- Width of rotary roadway
- Curves at entrance and exit
- Capacity of rotary
- Channelizing islands
- Camber and super elevation
- Sight distance
- Lighting
- Traffic signs
- Pedestrian ways