Many cities in the U.S. and around the world are installing a new generation of IP-based traffic cameras and controllers to improve road safety, reduce congestion and help drivers avoid traffic jams. Often, as in the city of Sacramento, California, traffic systems installed during the 1990s needed upgrading to provide more sophisticated monitoring and control capabilities. But doing so overburdened the network. . In many cases, relatively slow, legacy communication links needed to be replaced with state-of-the-art carrier Ethernet over copper access equipment. New IP Cameras Require Bigger Pipes Like many other municipalities, the City of Sacramento at one time had been managing nicely with dial-up modem links operating at speeds as low as 1200 baud for managing traffic sig

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