Twin Cities commuters won't have to wait at ramp meters this morning. The Minnesota Department of Transportation has shut off the meters to study how well they control congestion. They'll remain off for four to six weeks. Massachusettes-based Cambridge Systematics is conducting the ramp meter study. They've done similar studies in other cities, but have never turned off all the meters. Mark Cutler is the Vice President of Cambridge Systematics. He says they've already gathered some information.