What does stopping sight distance mean?

1 Answers
VonSienna
07/29/25 2:08pm
Stopping sight distance refers to the minimum travel distance required on the same lane when a vehicle encounters an obstacle ahead and must apply brakes to stop. Introduction to stopping sight distance: The minimum visible distance on the road should allow vehicles traveling at or near the design speed to stop before encountering a "stationary object" on the road, and the visible distance should at least ensure that low-skilled drivers or vehicles can stop within this distance. Components of stopping sight distance: Stopping sight distance consists of reaction distance, braking distance, and safety distance. Reaction distance refers to the distance traveled by the vehicle from the moment the driver detects an obstacle ahead and decides to apply brakes until the moment the brakes actually start to take effect. Braking distance refers to the distance traveled by the vehicle from the moment the brakes take effect until the vehicle comes to a complete stop. Safety distance is the minimum safe distance that should be maintained between the fully stopped vehicle and the obstacle.
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