Transportation Engineering

In transportation engineering, intersections play a crucial role in traffic flow and safety. This content showcases various types of intersections, including at-grade, grade-separated, three-leg, four-leg, and roundabouts. Understanding these intersection types is essential for designing efficient road networks.

• Transportation
• Engineering
• Intersections
• Traffic Flow
• Road Networks

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Uploaded on Feb 22, 2025 | 0 Views

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Presentation Transcript

1. Transportation Engineering 1

2. Intersections Intersections Intersection is an area shared by two or more roads which meet or cross. It is designated for vehicles to turn to different direction Turning need specific space for vehicles At grade and interchanges 2

3. Intersection Types Intersection Types At grade Intersections Grade separated Intersection (interchanges) 3

4. Intersection Types Intersection Types At grade Intersections may be classified by number of road segments, traffic controls or lane design. By road segment : three-leg, four-leg , and multi-leg By traffic control: uncontrolled, priority, stop-controlled, yield controlled, signalised intersection By Lane design : roundabout 4

5. At Grade Intersections At Grade Intersections three- leg intersection T intersection 5

6. At Grade Intersections At Grade Intersections three- leg intersection Y intersection 6

7. At Grade Intersections At Grade Intersections Four- leg intersection 7

8. At Grade Intersections At Grade Intersections four- leg intersection 8

9. At Grade Intersections At Grade Intersections Roundabout 9

10. At Grade Intersections At Grade Intersections Warrants: Traffic volume and conflicts Land availability Economy 10

11. At Grade Intersections At Grade Intersections Traffic conflicts Both direction One way 6 conflict points 11

12. At Grade Intersections At Grade Intersections Traffic conflicts Both direction Two way 24 conflict points 12

13. At Grade Intersections At Grade Intersections 13

14. At Grade Intersections At Grade Intersections 14

15. At Grade Intersections At Grade Intersections 15

16. At Grade Intersections At Grade Intersections 16

17. At Grade Intersections At Grade Intersections 17

18. At Grade Intersections At Grade Intersections 18

19. At Grade Intersections At Grade Intersections 19

20. At Grade Intersections At Grade Intersections 20

21. Grade separated and Interchanges Grade separated and Interchanges Elimination of crossing conflicts at intersection by vertical separation of roadways Route transfer at grade separation is accommodated by interchanges consisting of ramps 21

22. Grade separated and Interchanges Grade separated and Interchanges Grade separated Grade separated 22

23. Grade separated and Interchanges Grade separated and Interchanges Grade separated , Underpass Grade separated , Underpass 23

24. Grade separated and Interchanges Grade separated and Interchanges Grade separated , Overpass Grade separated , Overpass 24

25. Grade separated and Interchanges Grade separated and Interchanges Interchanges Interchanges 25

26. Grade separated and Interchanges Grade separated and Interchanges Interchanges Interchanges 26

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