Question

) You are driving downhill on people’s avenue on a snowy day. The maximum deceleration rate your vehicle can achieve with this pavement condition is 0.4g. The slope is about 18%. Because of the horizontal curve, you cannot see the traffic light until you are close to the intersection with 9th Street, which is 320 ft away from the intersection with 8th Street. Given that you are healthy, sober, and quite familiar with the environment, your perception and reaction time is 1.2 sec. a) What is the maximum speed you can drive on this road in order to safely stop behind the line? b) Two hours later, the snow is still not cleaned, and the maximum deceleration rate drops to 0.25g, what is the maximum speed you can drive? c) For an elderly resident, the PRT time may be 2.5sec. What should be the maximum speed in the second scenario?

Answer 1