Eye level sight distance is not considered in the design of sight distance.

Headlight sight distance:
- Headlight sight distance refers to the distance required for a driver to see and react to an object or hazard on the road using only the headlights of the vehicle.
- This is particularly important during nighttime or low visibility conditions when the headlights are the primary source of illumination.
- The design of sight distance takes into account the capabilities of vehicle headlights to ensure that drivers have sufficient time to react and avoid potential accidents.

Stopping sight distance:
- Stopping sight distance is the distance required for a driver to bring the vehicle to a stop after perceiving a hazard on the road.
- It considers the time needed for the driver to react, the braking capabilities of the vehicle, and the road surface conditions.
- This distance is essential to ensure that drivers have enough space to come to a safe stop and avoid collisions.

Intermediate sight distance:
- Intermediate sight distance relates to the distance required for a driver to overtake another vehicle safely on a two-lane road.
- It involves considering the acceleration capabilities of the overtaking vehicle, the speed of the vehicle being overtaken, and the clear visibility of the road ahead.
- This sight distance is crucial to prevent head-on collisions and ensure safe overtaking maneuvers.

Eye level sight distance:
- Eye level sight distance refers to the vertical distance required for a driver to have a clear view of the road and potential hazards.
- It takes into account obstacles such as vegetation, road signs, or other structures that may obstruct the driver's line of sight.
- While it is essential to have a clear view of the road, eye level sight distance is not specifically considered in the design of sight distance.
- Instead, the focus is mainly on horizontal sight distance, which ensures that drivers have an unobstructed view of the road ahead.

In conclusion, eye level sight distance is not considered in the design of sight distance. The design primarily focuses on headlight sight distance, stopping sight distance, and intermediate sight distance to ensure safe driving conditions and prevent accidents.