A traffic conflict is a traffic event involving the interaction of two or
more road users~ usually motor vehicles, where one or both drivers take
evasive action such as braking or swerving to avoid a collision. A traffic
conflict survey is a systematic method of observing and recording traffic
conflicts and other events associated with safety and operations. A person
who conducts the field survey is known as a traffic conflict observer.
This manual provides basic background information and standard procedures
for traffic conflict observers. The manual contains definitions Ioftraffic
conflicts which typically occur at intersections as well as step–by–step
instructions for conducting the survey.
Experienced observe~”s and engineers will find the manual to be a handy
reference source and an aid in training new personnel. Persons who have not
previously conducted a traffic conflict survey should carefully read this
manual as a first step in learning how to observe and record conflicts.
Because the results of a traffic conflict survey are used to make important
decisions concerning traffic safety and operations, it is imperative that
conflicts be recorded in a uniform or standard manner. Observers must
participate in a formal training program to help them recognize conflicts
under a variety of traffic and roadway conditions. One should not be expected
to count conflicts based on reading this manual alone. The training progranl,
conducted by the engineer, is essential to assure uniform and accurate data
collection. Training procedures, as well as metl~ods for analyzing and
interpreting conflict data are described in the engineer’s guide.[l]
The survey techniques described in this manual provide a cost-effective
method for accurately measuring traffic conflicts at signalized and
unsignalized intersections. The definitions and procedures are based on the
results of years of extensive research$ experirnentation~ and practice. In the
future it is anticipated that standardized procedures will be developed for
other roadway situations such as freeway entrances and exits? weaving areas$
midblock locations, and construction zones.
A traffic conflict is a traffic event involving the interaction of two or
more road users~ usually motor vehicles, where one or both drivers take
evasive action such as braking or swerving to avoid a collision. A traffic
conflict survey is a systematic method of observing and recording traffic
conflicts and other events associated with safety and operations. A person
who conducts the field survey is known as a traffic conflict observer.
This manual provides basic background information and standard procedures
for traffic conflict observers. The manual contains definitions Ioftraffic
conflicts which typically occur at intersections as well as step–by–step
instructions for conducting the survey.
Experienced observe~”s and engineers will find the manual to be a handy
reference source and an aid in training new personnel. Persons who have not
previously conducted a traffic conflict survey should carefully read this
manual as a first step in learning how to observe and record conflicts.
Because the results of a traffic conflict survey are used to make important
decisions concerning traffic safety and operations, it is imperative that
conflicts be recorded in a uniform or standard manner. Observers must
participate in a formal training program to help them recognize conflicts
under a variety of traffic and roadway conditions. One should not be expected
to count conflicts based on reading this manual alone. The training progranl,
conducted by the engineer, is essential to assure uniform and accurate data
collection. Training procedures, as well as metl~ods for analyzing and
interpreting conflict data are described in the engineer’s guide.[l]
The survey techniques described in this manual provide a cost-effective
method for accurately measuring traffic conflicts at signalized and
unsignalized intersections. The definitions and procedures are based on the
results of years of extensive research$ experirnentation~ and practice. In the
future it is anticipated that standardized procedures will be developed for
other roadway situations such as freeway entrances and exits? weaving areas$
midblock locations, and construction zones.
การแปล กรุณารอสักครู่..
![](//thimg.ilovetranslation.com/pic/loading_3.gif?v=b9814dd30c1d7c59_8619)