Drivers in Southlake may soon notice differences in when school zone lights are flashing near campuses in the city.

On Dec. 22, the Southlake Mobility Facebook page announced that the Southlake Mobility Team would be adjusting the flashing lights and traffic signals for school zones in the city and installing new signage through Dec. 31. The changes were put in place to reflect school start and end times, according to a release, and officially take effect with the beginning of the spring semester in January.

The changes within the city apply to Carroll ISD campuses as well as Florence Elementary—which is within the city but is a Keller ISD school—and The Clariden School, a private school in the northwest area of the city.

Carroll ISD’s spring semester begins Jan. 3 with a teacher workday, and students return Jan. 4.

For elementary and high school campuses, school zones will be activated 30 minutes before the school’s start time in the morning and end 10 minutes after that start time. In the afternoon, lights will begin 10 minutes before the school day ends and cease 30 minutes after the end time.

For the intermediate and middle school campuses in the city, the lights will activate 45 minutes before start time and end five minutes after it. In the afternoon, those campuses will also see school zones activated 10 minutes before school ends through 30 minutes after that end time.

In general, the new school zone times will be shorter in duration than the previous times, with the exception of a few that remained the same duration. A complete list of new school zone times can be found here.