Option: 04 If the posted or statutory speed limit or the 85th-percentile speed on the major street exceeds 40 mph, or if the intersection lies within the built-up area of an isolated community having a population of less than 10,, Figure 4C-4 may be used in place of Figure 4C-3 to evaluate the criteria in the second category of the Standard.
Guidance: 06 If this warrant is the only warrant met and a traffic control signal is justified by an engineering study, the traffic control signal should be traffic-actuated. Support: 01 The Pedestrian Volume signal warrant is intended for application where the traffic volume on a major street is so heavy that pedestrians experience excessive delay in crossing the major street.
Standard: 02 The need for a traffic control signal at an intersection or midblock crossing shall be considered if an engineering study finds that one of the following criteria is met:. Option: 03 If the posted or statutory speed limit or the 85th-percentile speed on the major street exceeds 35 mph, or if the intersection lies within the built-up area of an isolated community having a population of less than 10,, Figure 4C-6 may be used in place of Figure 4C-5 to evaluate Criterion A in Paragraph 2 , and Figure 4C-8 may be used in place of Figure 4C-7 to evaluate Criterion B in Paragraph 2.
Standard: 04 The Pedestrian Volume signal warrant shall not be applied at locations where the distance to the nearest traffic control signal or STOP sign controlling the street that pedestrians desire to cross is less than feet, unless the proposed traffic control signal will not restrict the progressive movement of traffic.
Guidance: 06 If this warrant is met and a traffic control signal is justified by an engineering study, then:. Option: 07 The criterion for the pedestrian volume crossing the major street may be reduced as much as 50 percent if the 15th-percentile crossing speed of pedestrians is less than 3.
Support: 01 The School Crossing signal warrant is intended for application where the fact that schoolchildren cross the major street is the principal reason to consider installing a traffic control signal. For the purposes of this warrant, the word "schoolchildren" includes elementary through high school students.
Standard: 02 The need for a traffic control signal shall be considered when an engineering study of the frequency and adequacy of gaps in the vehicular traffic stream as related to the number and size of groups of schoolchildren at an established school crossing across the major street shows that the number of adequate gaps in the traffic stream during the period when the schoolchildren are using the crossing is less than the number of minutes in the same period see Section 7A.
Guidance: 05 If this warrant is met and a traffic control signal is justified by an engineering study, then:. Support: 01 Progressive movement in a coordinated signal system sometimes necessitates installing traffic control signals at intersections where they would not otherwise be needed in order to maintain proper platooning of vehicles. Standard: 02 The need for a traffic control signal shall be considered if an engineering study finds that one of the following criteria is met:.
Guidance: 03 The Coordinated Signal System signal warrant should not be applied where the resultant spacing of traffic control signals would be less than 1, feet.
Support: 01 The Crash Experience signal warrant conditions are intended for application where the severity and frequency of crashes are the principal reasons to consider installing a traffic control signal. Standard: 02 The need for a traffic control signal shall be considered if an engineering study finds that all of the following criteria are met:. Option: 03 If the posted or statutory speed limit or the 85th-percentile speed on the major street exceeds 40 mph, or if the intersection lies within the built-up area of an isolated community having a population of less than 10,, the traffic volumes in the 56 percent columns in Table 4C-1 may be used in place of the 80 percent columns.
Support: 01 Installing a traffic control signal at some intersections might be justified to encourage concentration and organization of traffic flow on a roadway network. There are nine warrants for signals. They are based on vehicular volume, pedestrian activities, and crash experience records. Warrants should be regarded as a guide to determine the need for traffic control signals rather than an absolute criterion. Their use should always be professionally evaluated and justified by an engineering study.
The Eight-Hour Vehicular Volume signal warrant is intended for application at locations where a large volume of intersecting traffic is the principal reason to consider installing a traffic control signal, or where the traffic volume on a major street is so heavy that traffic on a minor intersecting street suffers excessive delay or conflict when entering or crossing the major street.
The Four-Hour Vehicular Volume signal warrant conditions are intended to be applied where the volume of intersecting traffic is the principal reason to consider installing a traffic control signal. Minimum Pedestrian Volume Is the number of pedestrians trying to cross a busy main street creating confusion, congestion or hazardous conditions? School Crossing Does the number of school children crossing a street require special control for their protection?
If so, is a traffic signal the best solution? Progression Movement Will the installation of a traffic signal allow for continuous, uniform traffic flow with a minimum number of vehicle stops? Accident Experience Does the intersection's accident history indicate that a traffic signal will reduce the possibility of a collision? In applying each condition the major-street and minor-street volumes shall be for the same 8 hours.
On the minor street, the higher volume shall not be required to be on the same approach during each of these 8 hours. Engineers evaluate the level of pedestrian activity at an intersection to see if a signal is warranted. The MUTCD describes Warrant 4 as "The Pedestrian Volume signal warrant is intended for application where the traffic volume on a major street is so heavy that pedestrians experience excessive delay in crossing the major street. As currently written, the warrant requires a fairly large volume of pedestrians crossing at a location.
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