...Minnesota's ramp meters have been around for 30 years, though most were added in the last decade or so. There are bigger meter systems, but the size of the Minnesota study has caught the eye of traffic managers in other cities. ------ On the Net...
...Minnesota has had ramp meters for 30 years, though most of those 430 were added between 1989 and 1994. The Twin Cities' meter system is dwarfed by that of Los Angeles County, the largest in North America with more than 1,000 meters. But the scope...
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