I heard a commercial on the radio recently for a service that lets truck drivers bypass scales, inspections, and ports of entry by giving them an 'electronic inspection' as they drive by. Sounded interesting, so I thought I'd check it out on the internet.
The service is called 'PrePass' and it's currently being used in 29 states, but not yet in Washington and Idaho (although all the states that border Washington and Idaho are using it).
PrePass allows transponder-equipped commercial vehicles to bypass weigh stations and ports of entry by electronically verifying safety, credentials, and weight of commercial vehicles as they drive by.
Cleared vehicles continue on at highway speed, eliminating the need to stop which means greater efficiency for shippers and improved safety for all highway users. It didn't say what happens if you're not 'cleared.' Electric shock maybe?
Anyway, if you want more information or are looking to kill some time, check out thePrePass website.