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Subproblem 3c - Page 3 of 5 |
ID# C303C03 |
Sub-problem 3c: Operational
Analysis of the South Section of Krome Avenue (Class I Signalized Arterial
Facility)
What factors are used to determine urban
street LOS? The LOS for a
signalized arterial is based on the average speed over its entire length.
The average speed is computed by dividing the facility length by the total
travel time for each vehicle. The total travel time includes the
running time between signals and the
control delay for through
movements. The LOS thresholds
for a Class I arterial are shown in Exhibit 3-21.
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Exhibit 3-21. LOS Thresholds
for Class I Arterials |
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LOS A |
>42 mph |
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LOS B |
>34-42 mph |
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LOS C |
>27-34 mph |
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LOS D |
>21-27 mph |
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LOS E |
>16-21 mph |
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LOS F |
<16 mph |
The running time is determined by an Exhibit within the HCM that provides a
running time based on the number of signals per unit length, the
free flow
speed, and the Class Type.
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