Traffic - Corridor State Highway 6 Performance
Great Place To Live
Status Indicators: Proceeding as Anticipated | Monitoring Progress | Reviewing for Improvement | Information Unavailable
Proceeding as Anticipated
Reviewing for Improvement
The results for the 4th quarter of FY19 show that the City met the level of service for all peak times. Every peak showed a travel time decrease with the PM peak reporting a 74 second decrease when compared to the 3rd quarter. The improvements are most likely due to summer traffic which is typically lower than the other seasons due to school being out for the first half of the quarter.
During the 4th quarter, SH 6/US 59 interchange average volumes decreased from just over 124,100 vehicles per day (vpd), to 121,200 vpd. Eighteen days in the 4th quarter reported weekday volumes under 120,000 vpd when compared to only 10 days in the 3rd quarter. The rest of the SH 6 corridor showed similar decreases in the 4th quarter. Additionally, 4th quarter Fridays continue to be the busiest day of the week with an average of 130,250 vpd. The scheduled expansion of SH 6 from 3 lanes to 4 lanes will help with the corridor performance when completed but may cause some delays on the roadway throughout its completion.
Average travel times details on Highway 6 from Dulles Avenue to First Colony Boulevard/Brooks Street are outlined below:
- AM: 6 minutes 1 second (35.2 mph, Level of Service B)
- Noon: 7 minutes 49 seconds (27.1 mph, Level of Service C)
- PM: 8 minutes 45 seconds (24.2 mph, Level of Service C)
Each peak time has a target of C, which means the City aims to have traffic flowing at a minimum of 51-67% of the speed limit. For Highway 6, this means the City aims to have a traffic goal of at least 23 - 30 MPH during the AM, noon, and PM peak travel times.
Per the 2010 Highway Capacity Manual, this metric is calculated as the average measured travel speed over the posted speed limit for the corresponding major corridor (avg. speed / posted speed limit). The calculated value is converted into a percentage and translated into a letter grade indicative of a Level of Service (A is the best, F is the worst). The slower the measured speed compared to the posted speed limit, the lower the Level of Service.
Measured major travel corridors include:
State Highway 6 (Dulles to Brooks St.) - 45 MPH
US Highway 90 (Dairy Ashford Blvd. to SH 6) - 50 MPH
Standard Levels of Service are classified by the 2010 Highway Capacity Manual.
A: ≥86% B: 68%-85% C: 51%-67% D: 41%-50%
E: 31%-40% F: ≤30%
A target of C means the City aims to have traffic flowing at a minimum of 51-67% of the speed limit. For Highway 6, this means the City aims to have a traffic goal of at least 23 - 30 MPH during the AM, noon, and PM peak travel times.
The City of Sugar Land's most vital vehicular travel corridors support commercial enterprise and quality of life. Shorter travel times help improve both commercial enterprise and quality of life.