Starting April 21, traffic signals on County Road 39 west of North Sea Road will be switched from a red-green cycle to either steady green or blinking yellow between 4 and 7 p.m. on weekdays. The two-week pilot program is designed to alleviate traffic during the afternoon westbound commute and to assess whether it could be a practicable solution to summer traffic. Southampton Town Highway Superintendent Charlie McArdle joined the editors on the podcast this week to explain how the program will work and to discuss Southampton's traffic challenges.