The car manufacturers didn't do it for funjubileee said:No. Not required by law.
kdbgoat said:My class C has passed inspections in two different states. It's a clearance light, not a third brake light.
I'm wired into the Jeep taillights with a diode pack, but I don't think just the taillights are bright enough during the day.
NY_Dutch said:FMVSS* #108 only requires a CHMSL** on vehicles 80 inches or less in width.
* FMVSS= Federal Motor Vehicle Safety Standards
** CHMSL= Center High Mounted Stop Light