Conditions For Permitting Overheight Movements

(1) Height in excess of thirteen feet six inches (13’6”) but not exceeding fifteen feet six inches (15’6”): (a) A special permit shall be required for all movements where the height of the motor vehicle and load exceeds thirteen feet six inches (13’6”). (b) Special routing may be required as a condition of the special permit. (c) If the height of the movement is fifteen feet (15’) or more the applicant shall provide a survey of the proposed route identifying the vertical clearance at each overpass located along the route. The application for the special permit will not be processed without this route survey. (d) When the permitted vehicle and load exceeds fifteen feet (15’) in height, the permittee shall determine all vertical clearances by use of a front escort vehicle having protrusions equal to, at a minimum, the height of the permitted vehicle and load. The OVERWEIGHT AND OVERDIMENSIONAL MOVEMENTS CHAPTER 1680-07-01 ON TENNESSEE HIGHWAYS escort vehicle shall be capable of immediately communicating with the permitted vehicle at all times and shall do so whenever any actual vertical clearance is less than the height of the permitted vehicle and load. The permitted vehicle shall follow the escort vehicle at such a distance and at such a speed as will permit stopping on receipt of advice that any vertical clearance is less than the height of the permitted vehicle and load. (2) Height in excess of fifteen feet six inches (15’6”): (a) Movements in excess of fifteen feet six inches (15’6”) may be permitted, as provided in Rule 1680-07-01-.12, if the movement is not detrimental or unsafe to the traveling public and the highway can accommodate the move. (b) When such movements are authorized, the following conditions will apply: 1. Special routing shall be required. The applicant shall provide a survey of the proposed route identifying the vertical clearance at each overpass located along the route. The application for the special permit will not be processed without this route survey. 2. Front and rear of movement shall be signed and marked as set forth in Rule 1680-07-01-.20. 3. The escort shall be marked as set forth in Rule 1680-07-01-.21. 4. The permittee shall determine all vertical clearances by use of a front escort vehicle having protrusions equal to, at a minimum, the height of the permitted vehicle and load. The escort vehicle shall be capable of immediately communicating with the permitted vehicle at all times and shall do so whenever any actual vertical clearance is less than the height of the permitted vehicle and load. The permitted vehicle shall follow the escort vehicle at such a distance and at such a speed as will permit stopping on receipt of advice that any vertical clearance is less than the height of the permitted vehicle and load.