Passing sight distance is the distance required by a driver to make a passing maneuver without cutting off the passed vehicle and before meeting an opposing vehicle.

Decision sight distance – The distance traveled in the time it takes a driver to recognize an object ahead, decide whether to stop their vehicle or change their path, and then make the maneuver.

Sight distance allows the driver to assess developing situations and take actions appropriate for the conditions. Sight distance relies on drivers being aware of and paying attention to their …

These are the key factors used in developing geometric criteria for sight distance. The Green Book identifies four types of sight distance: decision, intersection, passing (on two-lane roads) …

Oct 17, 2020 · The distance along the center line of the road at which a driver has visibility of an object, stationary or moving at a specified height above the carriage way is known as sight …

Nov 30, 2024 · Sight distance is a critical parameter in road design and safety analysis. It refers to the length of roadway ahead visible to a driver at any given moment. Proper sight distance …

In general, ISD refers to the corner sight distance available in intersection quadrants that allows a driver approaching an intersection to observe the actions of vehicles on the crossing leg(s). …

Sight distance is the length of highway a driver needs to be able to see clearly. It is important for drivers on a highway to see far enough down the highway to recognize an object in the path …

Sight distance should be considered in the preliminary design stages, when the horizontal and vertical alignments are still subject to adjustment. Three items will be covered under the …

In determining the sight distance triangle for a given intersection, use the target speed, rather than the design speed, for that intersection.