Acceleration, Deceleration, and Stopping Sight Distance Criteria for Geometric Design of Highways and Streets
Acceleration, deceleration, and stopping sight distance (SSD) criteria are necessary considerations
for determining geometric design requirements of roadways. Acceleration and deceleration are
influenced by many factors, including grade, vehicle type, and maneuver type. Stopping sight distance is influenced by factors such as brake reaction time, object height, and driver’s eye height.
NCHRP Research Report 1081: Acceleration, Deceleration, and Stopping Sight Distance Criteria for
Geometric Design of Highways and Streets,
from TRB's National Cooperative Highway Research Program, presents enhanced guidance on acceleration and deceleration and SSD criteria for the geometric design of highways and streets that may be appropriate for consideration in future updates of the 2018 AASHTO Green Book criteria.
This Summary Last Modified On: 3/12/2024