Fundamentals of Transportation/Sight Distance/Homework

Homework

 * 1) Name five principal characteristics of visual reception important in driving.
 * 2) You are shown an accident scene with a vehicle and a tree on uphill grade of 3%. The vehicle was estimated to hit the tree at 120 km*h−1 . The average length of skid marks was 20 meters. You have found that a car traveling that section under similar weather conditions at 60 km*h−1 can stop in 60 m. What was its initial speed?
 * 3) Draw a road's cross-section and label the elements.
 * 4) How do the calculations of stopping sight distance and passing sight distance differ?
 * 5) What is the recommended value used for perception reaction time according to AASHTO?
 * 6) What is a standard lane width used in new highway designs (to nearest foot or centimeter)?

/Homework