Factors Affecting Highway Capacity

Factors Affecting Highway Capacity

  1. Lane width

  2. Width of shoulder

  3. Lateral clearance

  4. Commercial vehicles

  5. Road alignment and geometry(curves, Super elevation etc)

  6. Existence of intersections.

  7. One way or two way traffic and number of lanes

  8. Drivers and vehicular characteristics

  9. Single type or mixed traffic

  10. Flow speed

  11. Weather condition

  12. Parking

  13. Presence of pedestrians


 The traffic volume fluctuates over time ,hence the designing must be done for peak hours,but it will be highly uneconomical to do so.Hence designing is done for reasonable traffic volume termed as “DESIGN HOURLY VOLUME”.