Diamond Bar Boulevard near Highland Valley Road
Speed limit starts at 50 mph when heading south from Temple Avenue. As soon as you pass Highland Valley Road, it becomes 40 mph. Motorcycle cops hide out in the business center on your left side with a radar gun, knowing that the speed limit just dropped 10 mph and you may still be going 50.
Vote for this Speedtrap below:
You need to register before posting a comment. This helps us protect the site from spammers. It's free, it only takes a few seconds to register, and your comments will remain anonymous.