“Riding as a passenger in a vehicle operated by a person intoxicated: DWI — Maximum jail time of 3 years or a fine of about $4,400 or less. DUI — Maximum jail time of two years or a fine not exceeding about $2,650.”
“You don’t have to be drinking to get into trouble
One of the new provisions of Japan’s revised traffic law spells out specific punishment for people who provide alcohol and vehicles to drunken drivers, and those who ride with a driver who they know has been drinking.”
source :: Stars and Strips