I-5 Anti-tailgating Strategy Backfires
Road crews painted dots 80 feet apart and posted signs telling drivers to stay at least two dots — 160 feet — from the vehicle ahead, based on the traffic safety principle of being at least two seconds behind another vehicle when going 60 mph.
Long backups developed Saturday, the day after the program began, when drivers slowed down because of heavy traffic and continued to maintain the two-dot separation, although that much distance was not necessary at slower speeds, said Lisa Mordock, a Transportation Department spokeswoman. King 5 News
Unintended consequences… I love it.