Sight Distance


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Sight Distance
1010404Sight Distance
AASHTO Recommendations The stopping sight distance (SSD) is the sum of the distance traveled during perception-reaction time (tR) and the distance traveled during braking to a stop from the design speed. The recommended value for tR is 2.5 s. The default value of the deceleration rate in the AASHTO Green BookAASHTO Green Book—A Policy on Geometric Design of Highways and Streets, 4th ed., American Association of State and Highway Transportation Officials, 20…
Citation
Indranil Goswami: Civil Engineering All-In-One PE Exam Guide: Breadth and Depth, Second Edition. Sight Distance, Chapter (McGraw-Hill Professional, 2012), AccessEngineering Export