“If you get out of a lane marked with a red X, the jackrabbits will then merge in far ahead of their original place in line.”
Q: In my view, the high-tech technology used to keep traffic flowing on Interstate 80 has been very disappointing.A: This is where Caltrans posts warning signs that may lower the speed limit for a problem ahead. It may also put up a red X to close a lane blocked ahead by a stall, fender bender or major crash. The warning signs can reduce speed limits to as low as 30 mph to get drivers to slow to a speed that is safe for conditions.
Q: I assumed the system would turn on automatically during commute hours to regulate overall flow. However, it seems as though it only is activated after a specific incident occurs.Q: When activated, lighted signage might show that a lane is blocked ahead and recommend a reduced speed. However, it always seems the recommended speed is 30 mph, usually faster than traffic is actually moving. The one time I saw a speed posted that was lower than 30 mph, traffic was moving even slower.
The operations are dynamic. Recommended speeds are based on downstream average vehicle speeds collected by vehicle detection stations. The primary intent is for drivers to slow down as they approach a crash to aid with orderly clearance of the road.
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