Ok, now THIS is a real traffic unit.
Got some info about this is in an email from firefighterclosecalls.com, pretty interesting. Apparently the local SOP is to send two vehicles for highway crashes, one as a rescue unit and the second as a blocker to protect the crews. But, the local drivers are pretty bad and they kept hitting the blocker unit causing a lot of damage and downtime. So... this came about.
It's a former utility truck from the water department, and has been given an arrow board, crash attenuator, light bar, chevrons, etc. And a split pattern for the front bumper lights. Boooo. The video says it's not in service yet, but I'm wondering if they'll put anything in the dump body. I'd say a bunch of cones and such, but getting access to them would probably be difficult.