Headquartered in Dixon, Illinois, with a nationwide customer service network, John Thomas, Inc. (JTI) has served the traffic control and roadway safety needs of state DOTs, municipalities and highway contractors for more than 20 years. From our state-of-the-art manufacturing facility, we proudly design and manufacture the trusted ADDCO™ PTS-2000 line of portable traffic signals -- the most advanced, easiest-to-deploy and simplest to operate portable traffic signals available. JTI also manufactures the industry’s only SEVERE USE raised curb separator system, Dura-Curb™. Unlike brittle plastic curb systems that shatter when impacted, the Dura-Curb is constructed of HMW/HDPE plastic, a highly durable, resilient material that absorbs impact energy and remains in service after impacts. In addition to the innovative products we manufacture, JTI represents leading manufacturers such as Energy Absorption Systems, Nu-Metrics, Safe-Hit, Nucor and more. Our entire product line represents the finest selection of roadway safety and traffic control products to make the roadways safer for highway workers and motorists.