LESSON 1/TASK 1
OTHER TRAFFIC STUDIES
There are many other studies that can be used to enhance traffic control and provide information to
better use MP resources. Device and speed studies have been covered in some detail since they are
among the more common studies that are done. Some of the other studies are discussed briefly in the
following paragraphs. More detailed information about them can be found in FM 19-25.
Stop Sign Observation Study
Stop sign observation studies are conducted to:
o Determine the need for keeping or replacing stop signs.
o Determine if a stop sign can be replaced by a yield sign.
o Compare driver compliance with accident rates. Intersections with a high accident rate that are
controlled by stop signs should be studied.
o Aid in finding ways to enhance driver compliance. (For example, through selective enforcement
and/or education.)
Stop sign studies are conducted by having a military policeman observe the actions of drivers at a stop
sign location. He observes and records how many drivers stop at the sign or simply slow down, as well
as those who ignore the sign completely. As with a speed study, and for the same reasons, it is best
for the individuals conducting the study to be inconspicuous. The data should be recorded on field data
sheets. If a traffic devices study has not been conducted recently, that information should also be
recorded.
Traffic Signal Observance Study
Traffic signal observance studies are made for reasons similar to those for stop sign observance
studies. Their purpose is to determine traffic signal compliance by drivers. The data gathered can then
be compared to accident rate information to see if traffic signal compliance is affecting the accident
rate. It also assists in determining the need for selective enforcement, education, retiming, or physical
changes.
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