road pricing
 n.— «Transport Secretary Alistair Darling has proposed charging drivers the equivalent of up to two dollars, 30 cents for every mile traveled on the nation’s most congested highways. “Road pricing,” as it’s called, would involve fitting cars with black boxes to record mileage and beaming information to authorities by way of satellite.» —“British government considers per mile charge to cut road congestion” in London, England WBOC-TV (Salisbury, Md.) June 8, 2005. (source: Double-Tongued Dictionary)

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