as a general policy, all freeway and interstate highway entrance ramps will be metered within the metro Atlanta area. There are two exceptions:
1. Freeway-to-Freeway ramps will not be metered. Travel speeds on these roadway segments will be high. Placement of signals that require vehicles to stop completely will violate driver expectancy.
2. Entrance ramps that enter a Collector-Distributor roadway system (C-D roads) will not be metered. Ramp meters on these entrance ramps will have no effect on mainline lanes, since the C-D roads absorb all the interruption of flow. Where the C-D roads enter the mainline will not be metered. Travel speeds on these roadways should be high, and traffic signals at the end of the CD road
system would
also
violate
driver
expectancy.