Genuine question from someone who commutes on the A2 almost daily. Every single evening rush hour, the dosing lights turn on and traffic backs up for kilometers, sometimes it feels like the lights themselves are what’s causing the jam more than the actual traffic volume. I get that the official reasoning is safety (avoiding queues stuck inside tunnels, understandable after 2001). But does anyone know if there’s actual published data showing these dosing systems reduce total delay/incidents versus just moving the bottleneck to a different spot on the highway? I’ve never seen a study, just the police repeating “it’s for safety” whenever people complain. Also, is this really unique to CH, or do other alpine tunnels run similar systems? Curious if anyone’s compared how effective ours actually is versus doing nothing and letting the queue form more naturally. submitted by /u/Big_Artichoke_2476
Originally posted by u/Big_Artichoke_2476 on r/Switzerland