A new law that takes effect on March 10 will force drivers on California highways to wear traffic signs.
The law, which went into effect in August, requires motorists to wear two traffic signs on each side of their vehicles.
California law requires motorists on the state’s main highways to have one sign for the speed limit and another sign for other conditions.
The sign for “stop sign” is the one that is required for speed limits, according to a spokesman for the California Highway Patrol.
The signs were not required to be posted on the Interstate 5 and California’s four major freeways until July.
The new law goes into effect on Saturday, according the spokesman.
A driver who does not have a traffic sign on their vehicle must wear the same sign as a passenger.