Local Transport Today is the authoritative, independent journal for transport decision makers. Analysis, Comment & News on Transport Policy, Planning, Finance and Delivery since 1989.

Time to be more grown up about tackling congestion

The traffic signal technology to ease urban congestion has been around for decades, so why don’t we use it?

By Douglas Reid


Twenty years ago the building blocks of modern traffic signals had well proven themselves and were ready to proliferate. 'SCOOT' network control developed by the Department of Transport and TRL was set to take the world by storm, with global company Siemens becoming an industry partner in 1989. Highly intelligent junction controllers, the devices that locally switch traffic signals, could be configured for the most complicated junctions, and our associated LinSig computer package had become...

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