High way and Transportation I(DIS) ECIV 4333. Instructor : Dr. Essam Almasri Assistants : Eng.Mustafa abou foul. VOLUME STUDIES. VOLUME STUDIES. Average Annual Daily Traffic (AADT) The average of 24-hour counts collected every day of the year. Average Daily Traffic (ADT)
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The average of 24-hour counts collected every day of the year.
The average of 24-hour counts collected over a number of days greater than one but less than a year.
The maximum number of vehicles that pas a point on a highway during a period of 60 consecutive minutes.
With respect to the type of vehicles for cars, two-axle trucks, or three-axle trucks.
The hourly volume = 1000+1200+1100+1000 = 4300 veh
The rates of low = [ No. of veh.] / [time(in hours)]
a)Complete the table of data collection.
b)Find the peak hour.
c)Determine the peak hour volume.
d)Calculate the peak hour factor (PHF).
is the time taken by a vehicle to traverse a given section of a highway.
is the time a vehicle is actually in motion while traversing a given section of a highway.
is the time lost by a vehicle due to causes beyond the control of the driver.
(for example, parking or un parking vehicles).
is that part of the delay caused by control devices such as traffic signals. This delay occurs regardless of the traffic volume or the impedance that may exist.
is that part of the delay during which the vehicle is at rest.
1- Those using a test vehicle
2- Those not requiring a test vehicle.