LESSON 1/TASK 1
this type of study assists in determining speed variations along a route. From the data gathered, the
number, location, cause, frequency, and duration of delays can be determined. The data also reflects
the overall speed and travel time along a route at various times of the day. This locates points of
congestion or insufficient road capacity. It may also indicate the need for traffic control device studies
to be made to determine the adequacy of such devices. Priorities for traffic control and future
construction programs can also be determined.
Other Studies
Motor Vehicle Volume Study. This type of study is made to determine the number, direction, and
variations in the volume of vehicles passing through an intersection or along a major route.
Roadway Capacity Study. These are studies to determine the practical capacity of roads and streets.
They may also provide a basis for changing traffic regulations. They measure the traffic density and
the traffic capacity. Traffic density is the number of vehicles per hour passing a given point. Traffic
capacity is the maximum traffic density a given stretch of road can accommodate at a set speed without
causing delay.
Accident Record Studies. The purpose of studying traffic accident records is to find measures to
increase vehicle safety and reduce accidents. Traffic accident prevention programs are never finished.
There must be a continuous study of accidents, violations, and the driver record program to update
vehicle safety. The study of these records helps to identify high accident rate locations. It contributes
to the evaluation of roadway design factors. These studies aid in planning remedial actions, and
selective and preventive enforcement programs. They may also be used to evaluate the effectiveness
of changes through before and after comparisons. The studies are conducted by recording data from
traffic accident investigations and violations.
Parking Studies
Parking is almost always a problem on most installations. Studies can be conducted concerning
inventory, usage, and facility service. Parking inventory surveys the number and location of current
parking facilities. Parking usage
22
Previous Page
