Local agencies receive requests for various intelligent safety technologies (active warning devices) like rectangular rapid flash beacons, speed radar signs, LED stop signs, etc. Since these devices are relatively new, agencies are looking for guidance on whether they are effective, when and where to install, what protocols/guidance are available and what other agencies are experiencing.
This guide provides detailed information on four intelligent warning devices (active warning signs). It is a resource that local agency staff can use and modify to their needs when considering these technologies. It includes a general explanation on their use, effectiveness, recommended installation protocols, alternative countermeasures to consider, and maintenance considerations. With this guide, agency staff can identify whether implementation is warranted and provide sourced responses to citizen’s requests for them.
The four intelligent warning devices detailed in this guide include:
• LED-enabled signs
• Radar speed feedback signs
• Rectangular rapid flashing beacons
• Dynamic “no turn on red” signs