Civil Engineering - Highway Engineering - Discussion

How the width will be affected with length? explain please.

I think it should be option A.

Why not D?

No, It will affect the width of the Shoulders!

How does it affect minimum radius of turning?

Width of Shoulders is the correct answer.

i.e. Option D.

The length of vehicles does not directly affect the widths of the shoulders on a road. Shoulder widths are generally designed based on factors such as:

1. Safety and Recovery Space: Providing sufficient space for vehicles to pull over safely or recover from off-road incidents.
2. Design Vehicle Width: The width of vehicles using the road (typically accounting for trucks and large vehicles).
3. Traffic Volume: Higher traffic volumes might require wider shoulders for additional safety.
4. Emergency Use: Space for stopped vehicles, pedestrians, cyclists, or emergency vehicles.
5. Maintenance Access: Room for maintenance equipment and activities.

The length of vehicles becomes more relevant in other aspects of road design, such as turning radii, passing sight distances, and parking lane dimensions. However, it has little to no influence on shoulder width requirements.