A vehicle is travelling with a speed of 100 kmph on a level surface. What is the lag distance travelled during the reaction time of the driver, considering the reaction time of the driver is 2.5 seconds?

If the superelevation provided on a highway curve is zero, calculate the maximum design speed for a curve radius of 200 m and a lateral coefficient of friction of 0.10. (Use v = √(f × g × R))

If the traffic flow rate on a highway lane is 600 vehicles per hour, the average time headway is: