Yellow 'Alternate Merge' Sign for I-295 Makes Big Difference in Driver Courtesy. By Ron Shaffer. February 5, 2003 at 7:00 p.m. EST. Dear Dr. Gridlock: ...

The light will cycle between red and green to indicate when cars can merge. One car will go at a time. When the meter is not in use, the signal will flash yellow. If the ramp gets full while the meter ...