In: Civil Engineering
Problem 1
The volume at a section of a 2 lane highway is 2000vph in each direction and the density is 50 vehicles per mile. A truck joins the traffic stream and travels a length of 5 miles at 20 mph before exiting the highway. The vehicles behind the truck produce a density of 110 vehicles/ mile and the flow rate is 1000 vph. How many vehicles are behind the truck before it leaves the highway.
Problem 2
Using Greenberg model of traffic flow theory:
us = c ln(kj /k)
Show that c = uo
Problem 3
Based on an entry-exit record in a gated parking lot, 275 cars parked during a typical day between 9 am and 6 pm. Of these cars 10% were parked for 1 hour, 35% for 2 hours, 25% for three hours and the remaining for 4 hours. About 15% of the bays are vacant on an average throughout the day. If the efficiency factor is 80 %, what is the space-hour demand and the number of parking spaces in the lot