advanced green

noun1

1. •
   (Canada) In some jurisdictions, a type of traffic light signal, in which the green light initially flashes while the matching light for oncoming traffic remains red, signalling drivers that they may make an unobstructed turn across the oncoming lane while the flashing continues.

   • About 30-to-35 parking meters will be installed on Queen and Main Sts. and some left turn prohibitions will be imposed and advanced greens added at the intersection to improve traffic flow. — 1993