Motorist compliance with standard traffic control devices.
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1989-04-01
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Edition:Final report.
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NTL Classification:NTL-OPERATIONS AND TRAFFIC CONTROLS-Traffic Control Devices;NTL-SAFETY AND SECURITY-Highway Safety;NTL-SAFETY AND SECURITY-Human Factors;
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Abstract:This report describes a study of motorist compliance with standard traffic control
devices. The research included a comprehensive review of past studies, contacts
with traffic, law enforcement, and department of motor vehicles personnel, and an
a?sessment of the viability of other information sources for identifying and
quantifying motorist noncompliance. It was concluded that while there is
considerable concern about motorist noncompliance, little data existed to
determine the frequency of occurrence or consequences of the problem.
To determine the reasons for noncompliance, motorists were interviewed. The
interviews included both typical motorists and those having high violation rates.
It was found that compliance is generally a function of perceived reasonableness
of the traffic controls. Field studies to observe motorist behavior were
conducted to establish the extent of noncompliance. Six noncompliance problems
were selected and data were gathered at over 900 sites in four States. The
results indicate that, ·although noncompliance is not uncommon (e.g., not making
a full stop at a STOP sign), the occurrence of conflicts resulting from the
noncompliance was insignificant.
Potential countermeasures for increasing compliance were identified with the
assistance of a panel of highway safety experts. Before/after field studies were
conducted to evaluate several of the potential countermeasures that involved
engineering changes. Limited changes in compliance were observed.
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