First let me say that I am not involved in the electrical field. I am a truck driver transporting mobile homes. As the years have gone by, homes are getting taller and taller. I just delivered one this past thursday that was 15'10 1/2" tall....and I hit a traffic lite in one town I went thru. Lucky for me no damage to lite, but sure messed up roof edge on house. My ? being, according to NFPA/NEC, is there not a minimum height requirement for signs, lites, etc, that cross over where commercial vehicle traffic travels? I have heard that the minimum was 16-18 feet, but I really don't know where to look to find this requirement. Can anyone out there please help??? Thanx, Bob