In May, traffic signal timing along the U.S. 31 (Main Street) corridor was optimized to help improve traffic flow by retiming the lights along Spring Hill’s busiest roadway so that drivers get the greatest amount of green light time and, if you’re within the speed limit, to not get caught at every red light. 

This project was the result of an extensive signal timing study, which focused on the 12 intersections along U.S. 31 that have existing signals or are planned to be signalized from Crossings Boulevard on the southern end to Buckner Road on the northern end. 

You’ll find a link to the full study on our website - the most recent document on the Key Proposals page: https://www.springhilltn.org/540/Key-Proposals. We encourage you to check out the study, where you’ll most likely find the summary pages at the first to be the most helpful as they explain how the study was conducted and the results achieved, which you can read about in the second infographic image within this FB post as well.

Among the great results were a:
- 44% percent decrease in northbound travel time in the morning
- 30% decrease in southbound travel time in the evening
- 17% decrease in bi-directional travel time throughout the day
- 102% increase in northbound travel speed in the morning
- 40% increase in southbound travel speed in the evening
- 32% increase in bi-directional travel speed throughout the day
- 42% decrease in northbound delay in the morning
- 47% decrease in southbound delay in the evening
- 26% decrease in bi-directional delay throughout the day

(These results can be viewed in an infographic on page 30 of the 47 opening summary pages in the report).