Escort vehicles are required in front on two-lane highways or in the rear on divided highways as follows:

1. (1) Vehicles over sixteen feet wide traveling on the interstate highway system require an escort.

2. (2) Vehicles over ten feet wide traveling on the following highways require a front escort:

   1. (a) U.S. Highway 14A from its intersection with Colorado Boulevard in Spearfish to its south junction with U.S. Highway 85;
   2. (b) U.S. Highway 85 from the Wyoming state line to its southernmost junction with U.S. Highway 14A and from its junction with U.S. Highway 14A in Lead to its junction with U.S. Highway 14A in Deadwood;
   3. (c) U.S. Highway 385 from its north junction with U.S. Highway 16 to its junction with U.S. Highway 85 and from its junction with U.S. Highway 18 in Hot Springs to its junction with State Trunk Highway 89 in Pringle;
   4. (d) State Trunk Highway 44 from its junction with U.S. Highway 385 to its junction with U.S. Highway 16B;
   5. (e) State Trunk Highway 231;
   6. (f) U.S. Highway 16A;
   7. (g) State Trunk Highway 244;
   8. (h) State Trunk Highway 87;
   9. (i) State Trunk Highway 89 from its junction with U.S. Highway 16A in Custer to its junction with State Trunk Highway 87;
   10. (j) State Trunk Highway 36;
   11. (k) State Trunk Highway 40 from its junction with U.S. Highway 16A to its junction with State Trunk Highway 79; and
   12. (l) State Trunk Highway 473.

3. (3) Vehicles over sixteen feet wide traveling on the following highways require a front escort:

   1. (a) U.S. Highway 16 from its east junction with U.S. Highway 16A at the Keystone Wye to the Wyoming border;
   2. (b) U.S. Highway 14A from its south junction with U.S. Highway 85 to its junction with Intertate 90 at Exit 30;
   3. (c) U.S. Highway 385 from its junction with State Trunk Highway 89 to its junction with U.S. Highway 16;
   4. (d) State Trunk Highway 89 from its junction with U.S. Highway 18 to its junction with U.S. Highway 385 at Pringle;
   5. (e) State Trunk Highway 85 from its north junction with U.S. Highway 14A in Deadwood to its junction with Interstate 90 at Exit 17;
   6. (f) State Trunk Highway 71 from its junction with U.S. Highway 18 in Hot Springs to the Nebraska border; and
   7. (g) State Trunk Highway 471 from its junction with State Trunk Highway 71 to its junction with U.S. Highway 18 at Edgemont.

4. (4) For all other highways on the state trunk highway system, vehicles over twenty feet wide require an escort. The permit-issuing authority may also require escort vehicles because of route limitations, traffic conditions, or unusual permit vehicle configuration conditions.

   A local highway patrol trooper may waive the front escort requirement for a specified period of time on any section of state trunk highway if the highway has adequate geometrics to provide for the safe operation of the vehicle.

Source: SL 1975, ch 16, § 1; 1 SDR 66, effective April 15, 1975; 4 SDR 91, effective July 11, 1978; 10 SDR 7, effective July 31, 1983; 11 SDR 33, effective September 3, 1984; transferred from § 70:01:04:21, effective November 1, 1986; 13 SDR 179, effective June 1, 1987; 13 SDR 129, 13 SDR 134, effective July 1, 1987; 16 SDR 49, effective September 19, 1989; 17 SDR 151, effective April 8, 1991 ; 49 SDR 89, effective May 1, 2023.

General Authority: SDCL 32-22-42 .

Law Implemented: SDCL 31-4-14 , 32-22-4 1 .

Prior versions effective: 1991-04-08.