['Longer Combination Vehicles']
['Longer Combination Vehicles']
05/02/2025
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Combination: Truck tractor and 2 trailing units—LCV
LENGTH OF THE CARGO–CARRYING UNITS: 110 feet
MAXIMUM ALLOWABLE GROSS WEIGHT: 90,000 pounds
OPERATIONAL CONDITIONS:
WEIGHT: Single axle = 20,000 pounds; tandem axle = 34,000 pounds; gross vehicle weight = 90,000 pounds. The total weight on any group of two or more consecutive axles shall not exceed the amounts shown in Table 1.
Axle Spacing (ft) | MAXIMUM LOAD (LBS) BY AXLE GROUP | ||||
---|---|---|---|---|---|
2 Axles | 3 Axles | 4 Axles | 5 Axles | 6 Axles | |
4 | 34,000 | – | – | – | – |
5 | 34,000 | – | – | – | – |
6 | 34,000 | – | – | – | – |
7 | 34,000 | – | – | – | – |
8 | 34,000 | 42,000 | – | – | – |
9 | 39,000 | 42,500 | – | – | – |
10 | 40,000 | 43,500 | – | – | – |
11 | – | 44,000 | – | – | – |
12 | – | 45,000 | 50,000 | – | – |
13 | – | 45,500 | 50,500 | – | – |
14 | – | 46,500 | 51,500 | – | – |
15 | – | 47,000 | 52,000 | – | – |
16 | – | 48,000 | 52,500 | 58,000 | – |
17 | – | 48,500 | 53,500 | 58,500 | – |
18 | – | 49,500 | 54,000 | 59,000 | – |
19 | – | 50,000 | 54,500 | 60,000 | – |
20 | – | 51,000 | 55,500 | 60,500 | 66,000 |
21 | – | 51,500 | 56,000 | 61,000 | 66,500 |
22 | – | 52,500 | 56,500 | 61,500 | 67,000 |
23 | – | 53,000 | 57,500 | 62,500 | 68,000 |
24 | – | 54,000 | 58,000 | 63,000 | 68,500 |
25 | – | 54,500 | 58,500 | 63,500 | 69,000 |
26 | – | 56,000 | 59,500 | 64,000 | 69,500 |
27 | – | 57,500 | 60,000 | 65,000 | 70,000 |
28 | – | 59,000 | 60,500 | 65,500 | 71,000 |
29 | – | 60,500 | 61,500 | 66,000 | 71,500 |
30 | – | 62,000 | 62,000 | 66,500 | 72,000 |
31 | – | 63,500 | 63,500 | 67,000 | 72,500 |
32 | – | 64,000 | 64,000 | 68,000 | 73,500 |
33 | – | – | 64,500 | 68,500 | 74,000 |
34 | – | – | 65,000 | 69,000 | 74,500 |
35 | – | – | 66,000 | 70,000 | 75,000 |
36 | – | – | 68,000 | 70,500 | 75,500 |
37 | – | – | 68,000 | 71,000 | 76,000 |
38 | – | – | 69,000 | 72,000 | 77,000 |
39 | – | – | 70,000 | 72,500 | 77,500 |
40 | – | – | 71,000 | 73,000 | 78,000 |
41 | – | – | 72,000 | 73,500 | 78,500 |
42 | – | – | 73,000 | 74,000 | 79,000 |
43 | – | – | 73,280 | 75,000 | 80,000 |
44 | – | – | 73,280 | 75,500 | 80,500 |
45 | – | – | 73,280 | 76,000 | 81,000 |
46 | – | – | 73,280 | 76,500 | 81,500 |
47 | – | – | 73,500 | 77,500 | 82,000 |
48 | – | – | 74,000 | 78,000 | 82,000 |
49 | – | – | 74,500 | 78,500 | 83,500 |
50 | – | – | 75,500 | 79,000 | 84,000 |
51 | – | – | 76,000 | 80,000 | 84,500 |
52 | – | – | 76,500 | 80,500 | 85,000 |
53 | – | – | 77,500 | 81,000 | 86,000 |
54 | – | – | 78,000 | 81,500 | 86,500 |
55 | – | – | 78,500 | 82,500 | 87,000 |
56 | – | – | 79,500 | 83,000 | 87,500 |
57 | – | – | 80,000 | 83,500 | 88,000 |
58 | – | – | – | 84,000 | 89,000 |
59 | – | – | – | 85,000 | 89,500 |
60 | – | – | – | 85,500 | 90,000 |
DRIVER: All drivers must have a commercial driver’s license with the appropriate endorsement and must meet the requirements of the Federal Motor Carrier Safety Regulations (49 CFR 390–397). State requirements more stringent and not in conflict with Federal requirements take precedence.
VEHICLE: All vehicles must meet the requirements of applicable Federal and State statutes, rules, and regulations. Vehicles and load shall not exceed 102 inches in width on the Interstate System and four–lane divided highways. Maximum semitrailer length is 53 feet.
Multiple trailer combinations must be stable at all times during braking and normal operation. A multiple trailer combination when traveling on a level, smooth paved surface must follow in the path of the towing vehicle without shifting or swerving more than 3 inches to either side when the towing vehicle is moving in a straight line. Heavier trailers are to be placed to the front in multiple trailer combinations.
PERMIT: An annual special authorization permit is required for tandem trailer vehicles operating on the Interstate System having a gross weight of more than 80,000 pounds. A fee is charged for the special authorization permit.
ACCESS: Access is allowed from legally available routes (listed below) to service facilities and terminals within a 5–mile radius. Access is also authorized on two–lane roadways which connect multi–lane divided highways when such connection does not exceed 15 miles.
ROUTES: Doubles with 29–foot trailers may use any route on the NN. Doubles with at least one trailer or semitrailer over 29 feet in length are limited to the Interstate and other multi–lane divided highways listed below.
From | To | |
---|---|---|
I–35 | Texas | Kansas |
I–40 | Texas | Arkansas |
I–44 | Texas | Missouri |
I–235 | Entire length in Oklahoma City | |
I–240 | Entire length in Oklahoma City | |
I–244 | Entire length in Tulsa | |
I–444 | Entire length in Tulsa | |
I–40 Bus | I–40 Exit 119 | US 81 El Reno |
US 60 | I–35 Exit 214 | US 177 Ponca City |
US 62 | US 69 Muskogee | OK 80 Ft. Gibson |
US 62 | I–44 Exit 39A Lawton | OK 115 Cache |
US 64 | Cimarron Turnpike | I–244 Tulsa |
US 64 | I–35 Exit 186 Perry | US 77 Perry |
US 64 | I–40 Exit 325 Roland | Arkansas |
US 69 | Texas | I–44 (Will Rogers Tpk) Exit 282 |
US 70 | OK 76 Wilson | I – 35 Exits 31A–B Ardmore |
US 75 | I–40 Exits 240A–B Henryetta | I–244 Exit 2 Tulsa |
US 75 | I–44 Exits 6A–B Tulsa | Dewey |
US 77 | I–35 Exit 141 Edmond | 3.5 mi. W of I–35 |
US 81 | I–44 (Bailey Tpk.)
Exit 80 | South Intersection OK 7 Duncan |
US 81 | OK 51 Hennessey | 11.5 mi. N of US 412 |
US 169 | OK 51 Tulsa | OK 20 Collinsville |
US 270 | Indian Nation Tpk. Exit 4 | US 69 McAlester |
US 270 | OK 9 Tecumseh | I–40 Exit 181 |
US 271 | Texas | Indian Nation Tpk. Hugo |
US 412 | I–44 Exit 241 Catoosa | US 69 |
US 412 | OK 58 Ringwood | I–35 Exits 194A–B |
US 412 | US 69 Chouteau | OK 412 B |
OK 3 | I–44 Exit 123 | Oklahoma/Canadian County Line |
OK 3A | OK 3 Oklahoma City | I–44 Exit 125B Oklahoma City |
OK 7 | I–44 Exits 36A–B | OK 65 Pumpkin Center |
OK 7 | I–35 Exit 55 | US 177 Sulphur |
OK 7 | South intersection US 81 Duncan | 7.5 mi. E of US 81 |
OK 9 | I–35 Exit 108A | US 77 Norman |
OK 11 | I–35 Exit 222 | US 177 Blackwell |
OK 11 | US 75 Tulsa | I–244 Exit 12B |
OK 33 | US 77 Guthrie | I–35 Exit 157 Guthrie |
OK 51 | I–35 Exit 174 | US 177 Stillwater |
OK 51 | I–44 Exit 231 Tulsa | Muskogee Tpk. Broken Arrow |
OK 165 | Connecting two sections of the Muskogee Turnpike at Muskogee | |
OK 165 | US 64/Bus. US 64 Muskogee | Muskogee Tpk. |
Cimarron Tpk. | I–35 Exit 194 | US 64 |
Cimarron Tpk. Conn. | US 177 Stillwater | Cimarron Tpk |
Indian Nation Turnpike | US 70/271 Hugo | I–40 Exits 240A–B Henryetta |
Muskogee Tpk. | OK 51 Broken Arrow | US 62/OK 165 Muskogee |
Muskogee Tpk | OK 165 Muskogee | I–40 Exit 286 Webber’s Falls |
LEGAL CITATIONS:
Title 47 1981 O.S. 14–101
Title 47 1990 O.S. 14–103, –109, and –116
DPS Size and Weight Permit Manual 595:30.
Combination: Truck tractor and 3 trailing units—LCV
LENGTH OF THE CARGO–CARRYING UNITS: 95 feet
MAXIMUM ALLOWABLE GROSS WEIGHT: 90,000 pounds
OPERATIONAL CONDITIONS:
WEIGHT and ACCESS: Same as the OK–TT2 combination.
DRIVER: Same as the OK–TT2 combination except that in addition, a driver of a three trailing unit combination must have had at least 2 years of experience driving tractor–trailer combinations.
VEHICLE: All vehicles must meet the requirements of applicable Federal and State statutes, rules, and regulations. Vehicle and load shall not exceed 102 inches in width on the Interstate System and other four–lane divided highways. Maximum unit length of triple trailers is 29 feet. Truck tractors pulling triple trailers must have sufficient horsepower to maintain a minimum speed of 40 miles per hour on the level and 20 miles per hour on grades under normal operation conditions. Heavy–duty fifth wheels, pick–up plates equal in strength to the fifth wheel, solid kingpins, no–slack hitch connections, mud flaps and splash guards, and full–width axles are required on triple trailer combinations. All braking systems must comply with State and Federal requirements.
Multiple trailer combinations must be stable at all times during braking and normal operation. A multiple trailer combination when traveling on a level, smooth paved surface must follow in the path of the towing vehicle without shifting or swerving more than 3 inches to either side when the towing vehicle is moving in a straight line. Heavier trailers are to be placed to the front in multiple trailer combinations.
PERMIT: An annual special combination permit is required for the operation of triple–trailer combinations on the Interstate System and other four–lane divided primary highways. This permit also authorizes such combinations to exceed 80,000 pounds on the Interstate System.
The permit holder must certify that the driver of a triple–trailer combination is qualified. Operators of triple–trailer combinations must maintain a 500–foot following distance and must drive in the right lane, except when passing or in an emergency.
Speed shall be reduced and extreme caution exercised when operating triple–trailer combinations under hazardous conditions, such as those caused by snow, wind, ice, sleet, fog, mist, rain, dust, or smoke. When conditions become sufficiently dangerous as determined by the company or driver, operations shall be discontinued and shall not resume until the vehicle can be safely operated. The State may restrict or prohibit operations during periods when, in the State’s judgement, traffic, weather, or other safety conditions make such operations unsafe or inadvisable.
Class A and B explosives; Class A poisons; and Class 1, 2, and 3 radioactive material; and any other material deemed to be unduly hazardous by the U.S. Department of Transportation cannot be transported in triple–trailer combinations.
A fee is charged for the annual special authorization permit.
ROUTES: Same as the OK–TT2 combination.
LEGAL CITATIONS:
Title 47 1981 O.S. 14–101
Title 47 1990 O.S. 14–109, –116, –121
DPS Size and Weight Permit Manual 595:30.
['Longer Combination Vehicles']
['Longer Combination Vehicles']
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