For over 20 years, LightGuard Systems®, Inc. has developed, manufactured and shipped Smart Crosswalk™ to locations through ...out the United States. Smart Crosswalk™ (In-Roadway Warning Light (IRWL) enhanced crosswalk system) is designed to alert approaching motorists to the presence of a pedestrian at a street crossing. A number of in-pavement signal lights are placed across a roadway in...