[rheavn]

"M/C over 40' are only allow on interstates and you are suppose to get permit for other road is what the officer told me"

Unfortunately what you were told is not totally true. California is a stickler on over 65' though. Any one traveling in a 40'+ motorcoach in California may want to bookmark this site as it clearly shows what roads are permitted for over 40' motorcoaches. All interstates and most state highways are allowable.

http://www.dot.ca.gov/hq/traffops/trucks...us-map.htm

California escapee...........................