Editor’s note: This was one of Mr. Roadshow’s favorite columns and stories from more than 30 years of informing, entertaining and getting things changed for Bay Area (and beyond) drivers. It was ...

There's another battle brewing in California — and like just about everything in the Golden State, it's happening on the highway. Legislators are trying to crack down on the black market for a little ...

Like a loaf of bread, they all have expiration dates. Currently, only burgundy, lime green, yellow and blue stickers allow the driver to take a carpool lane without a passenger. The first three colors ...

Q: Hello Mr. Honk! As an electric-vehicle driver with stickers, I closely follow all of your carpool updates. You recently notified us that the California Highway Patrol would give no grace period ...

Q. You recently talked about Clean Air Vehicle stickers that have not expired. I have a 2019 Kia, all electric. Do you mean to tell me that my stickers expire at some point? And then I can’t drive in ...