Intelligent Transportation Systems in Work Zones: Leveraging the Internet and Wireless Communications
Work zone surveillance was achieved through closed circuit television cameras (CCTV), broadband wireless communications, and directional antennas. Motorists approaching the interchange of I-25 and I-40 were made aware of traffic conditions (lanes affected) via information displayed on dynamic message signs (DMS), and through strategic deployment of portable changeable message signs (CMS). In addition, pre-trip traffic information was updated every three minutes on the "BIG I" Internet web-site.
After approximately one year of operations the average clearance time on the "BIG I" was 20 minutes faster than the historical average clearance time of 45 minutes.