1. Highway Engineering
Subject Code – CE 6504

2. Topics Session No Topics to be covered Time Ref Teaching Method 05
Road Patterns
50 min
1, 2
PPT

3. Road Patterns The various road patterns may be classified as:
Rectangular or Block pattern
Radial or star and block pattern
Radial or star and circular pattern
Radial or star and grid pattern
Hexagonal pattern
Minimum travel pattern

4. Rectangular or block pattern
Junction
Main road
Central Business Area

5. Radial or star & block pattern
Radial roads
Central Business Area
Built-up area
Rectangular pattern

6. Radial or star & Circular pattern
Central Business Area
Ring road
Radial road

8. Radial or star & Grid pattern
Central Business Area
Radial road

9. Hexagonal pattern

10. The choice of the pattern very much depends on the locality, the layout of different towns, villages, industrial and production centres and on the choice of the planning engineer. The rectangular or the block pattern has been adopted in the city roads of Chandigarh. But from traffic operation point this is not considered convenient. An example of radial and circular pattern is the road network of Connaught Place in New Delhi. The Nagpur road plan formulae were prepared assuming Star and Grid Pattern.