ADDCO Traffic Control Products

ADDCO LLC was founded in 1953

in St. Paul, Minnesota on the values of world-class engineering, quality manufacturing and providing exceptional customer service. By dedicating the

company to traffic sign solutions, ADDCO earned the reputation

as a leader in the industry. These dedicated efforts have led to advanced technologies that only ADDCO can offer still today

Our engineers create solutions for real-world problems. They research root causes, develop new approaches

and test from concept through implementation. ADDCO’s track record in the field, reputation for product

innovation and ISO 9001:2015 quality management system ensures that ADDCO Dynamic Message Signs

will perform consistently even in the most

demanding environments