Continuous Flow Metering Survey
The Colorado Department of Transportation (CDOT) tested a new way of metering traffic at the Eisenhower/Johnson Tunnels on Saturday, December 8, 2012. For the past 25 years, CDOT has metered traffic at the Tunnel when traffic volumes exceed of the capacity of the highway or when an accident or inclement weather causes traffic to come to a standstill, backing up into the tunnel. The typical metering operation has been to stop all traffic from entering the tunnel, with stops of 15-20 minutes at a time, on average in order to keep the tunnel clear for emergency vehicles. Metering is done for the safety of the traveling public.