gerstnerGerstner Electric is under contract for MoDOT’s Gateway Guide System. In a given year we will perform preventive maintenance on 430 CCTV cameras, 87 DMS signs, 292 detector stations and 175 wireless antennas sites. Last year we responded to 104 routine tickets and 11 emergency tickets. In addition, to our Gateway Guide maintenance we also provide on call maintenance for at 90 sites in St. Louis City, St. Louis County, St. Charles County, Franklin County, and Jefferson County.