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
While the City is on target this quarter, 50% of citizens surveyed in the 2017 Citizen Satisfaction Survey selected flow of traffic and congestion management as one of the most important items they thought should receive the most emphasis over the next two years. Today SH 6/US59 is a major interchange that serves approx. 110 – 120 thousand vehicles a day. With the continued growth of City and region, congestion along SH 6 will continue to be one of the biggest challenges for the City to manage. The City recognizes the importance to keep in front of mobility needs to maintain manageable service levels. The City has implemented an adaptive traffic signal system on SH 6 and plans to widen the section north of Lexington through Brooks to help better manage times when SH 6 is saturated including holidays.
During the holidays, traffic saw high intensities of traffic start at 10 am through 9 pm which caused speeds to drop as low as 10 mph on occasion but on average the City met all targets. There was no change in overall level of service from previous quarter for any of the peaks. Approximately 64,000 vehicles traveled on SH 6 on a typical day with 10% of total vehicles measured from 5-6 pm. Staff continues to validate the corridor times as assurance to the system.
Average travel times on Highway 6 from Dulles to Brooks are outlined below:
- AM: 6 minutes 14 seconds (34 mph)
- Noon: 7 minutes 19 seconds (29 mph)
- PM: 8 minutes 13 seconds (25.8 mph)
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 traffic goal 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.