Warning Lites of Southern Illinois
WLSI will meet or exceed customers’ expectations for quality and value with competitive products and services. People are the foundation of our success and therefore, WLSI will recognize initiative, promote respect, and provide training, tools, and facilities needed to accomplish our goals. WLSI will lead the traffic control and work zone safety industry through innovation and active participation within it.
24/7 Emergency Response
We are available 24/7 for your Traffic Control Needs.
8:00 am to 4:30 pm