Travel Times on Changeable Message Signs in District 4

Real time traffic information on changeable message signs (CMS) has gained popularity in urban areas where congestion and incidents frequently affect the reliability of trip times. Signs have been used to broadcast information about downstream delays, incidents and travel times in a corridor. Under normal conditions, trip time is the most practical information that commuters can use to assess traffic, alleviate their stress, and ultimately make decisions on their route. Being aware of driving times to popular destinations, travelers may be able to choose an alternate route early if it appears that their intended route is too congested. Moreover, signs are the most effective mean to communicate real-time, relevant information to motorists. Unlike a radio broadcast, signs target drivers passing a given location, so that the message is highly likely to be of interest to those drivers. On-demand media such as phone or internet-based services require the user to operate a specific device, which is more fastidious and potentially hazardous.