(a) The operator of a semitrailer, pole trailer, or trailer restricted to the streets designated as “truck routes” by this article may depart from the truck routes when it is necessary to reach a truck terminal or to load or unload merchandise at locations situated off designated truck routes. The operator of a trailer, semitrailer, or pole trailer shall not leave a designated truck route until he has reached a turning off point leading to the ultimate destination of the vehicle by the shortest practical route which is consistent with the reasonable operation of the vehicle.
(b) A person operating a semitrailer, pole trailer, or trailer commits an offense if, between the hours of 10:00 p.m. and 6:00 a.m. on any day, he leaves a designated truck route and operates the semitrailer, pole trailer, or trailer on a street that is adjacent to single-family or duplex residential dwellings.
(c) It is a defense to prosecution under Subsection (b) that the person:
(1) was moving a structure on a street or roadway or portion of a street or roadway, other than a designated truck route, pursuant to a valid permit issued by the building official under Subchapter 62 of the Dallas Building Code; and
(2) had specific written authorization from the building official to use that portion of the street or roadway while moving the structure. (Ord. Nos. 14584; 17792; 19749)