Traffic Control Devices
The standard height of a STOP sign measured from the roadway to the bottom of the sign in urban areas.
what is 7 feet?
The greatest influence on horizontal curve design.
what is design speed?
The primary measure used to determine LOS.
What is average control delay?
A component of traffic modeling commonly shortened to TAZ.
What is Traffic Analysis Zone?
A study based factor used in Benefit-Cost ratio calculations.
what is a CMF?
The warrant in the MUTCD that addressed the installation of a traffic signal based on crash experience.
What is Warrant 7?
The primary bases for minimum stopping sight distance.
what is driver perception-reaction time and braking distance?
Indicates that demand exceeds capacity.
What is v/c over 1.0?
The four traditional steps of travel demand forecasting.
What are trip generation, trip distribution, mode choice, and traffic assignment?
Study whose primary purpose is to identify potential safety issues before crashes occur.
what is an RSA?
The traffic signal display used to allow permissive left turns while retaining the ability to provide a protected phase.
What is Flashing Yellow Arrow?
Design consideration that aims to provide a recovery area for errant vehicles?
What is a clear zone?
Maximum sustainable hourly flow rate under prevailing roadway, traffic, and control conditions.
What is the definition of capacity.
Additional travel that occurs because increased roadway capacity reduces travel costs or congestion.
What is induced demand?
Statistical phenomenon that explains why locations with unusually high crash frequencies often improve over time without any treatment.
What is regression to the mean?
The primary purpose of retroreflectivity requirements on traffic signs.
What is to maintain nighttime visibility for drivers?
The percent at which grade needs to be taken into account when calculating stopping sight distance.
What is 3%.
The time relationship between the start of green at adjacent coordinated intersections.
What is offset?
Analysis to determine where trips begin and end to identify travel patterns.
What is O-D analysis?
One is a multiplicative factor applied to crashes, while the other is a percent reduction in crashes.
What is the primary difference between a CMF and a CRF?
signal timing consideration that allows drivers who cannot safely stop to clear the intersection?
what is yellow change interval?
The document that provides nationally recognized methods for conducting traffic impact studies.
What is ITE's Transportation Impact Analysis for Site Development?
The federal legislation that required metro areas over 50,000 population to establish an MPO.
What is the federal-aid highway act of 1962.
A study where one of the primary recommendations is for key personnel to attend cross-walk training.