Idah: Idah revised vehicle cde: http://www.legislature.idah.gv/idstat/title49/t49.htm (6) "Trailer" means: (a) General. Every vehicle withut mtive pwer designed fr carrying persns r prperty and fr being drawn by a mtr vehicle. https://itd.idah.gv/dmv/pe/legalwidthheightlength.htm IDAHO LEGAL WIDTH, HEIGHT AND LENGTH WIDTH (including lad) 8 FT 6 IN HEIGHT (including lad) 14 FT LENGTH SINGLE MOTOR VEHICLE 45 FT TRAILER* OR SEMITRAILER* OTHER THAN NATIONAL NETWORK NATIONAL NETWORK 48 FT 53 FT MOTOR VEHICLE AND ONE OR MORE TRAILERS EXCEPT AS NOTED.* 75 FT
DOUBLE TRAILERS OTHER THAN NATIONAL NETWORK NATIONAL NETWORK* 61 FT OF TRAILERS (OR 75 FT OVERALL) 68 FT OF TRAILERS DROMEDARY TRACTOR STINGER STEERED** NON STINGER STEERED 75 FT 65 FT TRADITIONAL AUTO OR BOAT TRANSPORTER*** STINGER STEERED** NON STINGER STEERED 75 FT 65 FT SADDLEMOUNT COMBINATIONS OTHER THAN NATIONAL NETWORK NATIONAL NETWORK* 75 FT 97 FT TRUCK TRACTOR WITH STINGER STEERED**POLE TRAILER 75 FT
OR LOG DOLLY CONNECTED BY A REACH OR POLE OVERHANG FRONT OF ANY VEHICLE BEYOND THE END OF ANY VEHICLE LEFT FENDER OF PASSENGER VEHICLE RIGHT FENDER OF PASSENGER VEHICLE FRONT & REAR OVERHANG COMBINED OF AUTO OR BOAT TRANSPORTER 4 FT 10 FT 0 FT 6 IN 7 FT * OVERALL length nt restricted t 75 feet. ** Stinger Steered: A truck tractr semi trailer cmbinatin where the kingpin is lcated 5 feet r mre t the rear f the centrid f the rear axle(s). *** Traditinal aut/bat transprters haul a vehicle ver the twing unit. If nt hauling a vehicle/bat ver the cab then yu will be gverned by ne f the fllwing: A full truck with trailer - gverned by verall length f 75 ft bumber t bumper. 4 ft f frnt verhang and 10 ft f rear verhang allwed.
Semi-tractr with trailer - gverned by trailer length nly. 4 ft f frnt verhang and 10 ft f rear verhang allwed. 1 MILE ACCESS TO TERMINALS AND FACILITIES FOR FUEL, FOOD, LODGING & REPAIRS TITLE 49 MOTOR VEHICLES CHAPTER 10 WEIGHT, SPEED AND TIRE REGULATIONS 49-1010. SIZE OF VEHICLES AND LOADS. N vehicle shall exceed the dimensins specified belw, except that certain devices determined by the bard as necessary fr the safe and efficient peratin f mtr vehicles, including energy cnservatin devices, shall be excluded frm the calculatin f width r length. (1) The width f a vehicle, including any lad theren, except as nted belw, shall nt exceed... 8 1/2 feet. (a) The limitatins as t size f vehicles stated in this sectin shall nt apply t farm tractrs r t implements f husbandry, including any lad theren, r any trailer nt wider than the implement f husbandry used in the transprtatin f implements f husbandry fr agricultural peratins, and including all equipment used in land leveling peratins, when being incidentally perated upn the highway frm ne (1) farm peratin t anther during daylight hurs. (b) The limitatins as t size f vehicles shall nt apply t farmers r their designated agents, transprting implements f husbandry and equipment listed in paragraph (a) f this subsectin fr the purpse f: (i) The repair r maintenance f such implements f husbandry and equipment when traveling t r frm a farm t a repair r maintenance facility during daylight hurs; r (ii) The purchase r sale f such implements f husbandry and equipment when traveling t r frm a farm t a dealership, auctin huse r ther facility during daylight hurs. (c) Ntwithstanding the exemptin frm width limitatin fr farm tractrs included in paragraph (a) f this subsectin, the ttal utside width f any farm tractr being transprted n the interstate system in this state, except as permitted by sectin 49-1004, Idah Cde, shall nt exceed... 9 feet.
(d) A farm tractr r implement f husbandry, when being incidentally transprted upn the highway with a width in excess f the limits f paragraphs (a) and (c) f this subsectin, must display ne (1) red r flurescent range flag a minimum f twelve (12) by twelve (12) inches n the utermst left prjectin f the tractr r implement being transprted. (2) The height f a vehicle, including the lad theren, shall nt exceed... 14 feet. (3) The length f a vehicle, r vehicle cmbinatin, except as nted belw shall nt exceed: (a) When a single mtr vehicle... 45 feet. (b) When a trailer r semitrailer, except as nted belw. 48 feet. 1. Semitrailers perating n rutes determined by the bard t have severe curvature, deficient width and/r heavy traffic cnditins shall be limited t an verall cmbinatin length nt t exceed... 65 feet. 2. The length f a trailer tngue, r the length f the tngue f a cnverter gear used t cnvert a semitrailer t a trailer, shall be excluded frm the calculatin f a trailer length. 3. Semitrailers perating n rutes which are a part f the natinal netwrk as set frth in 23 CFR 658, n rutes prviding access between the natinal netwrk and terminals and facilities fr fd, fuel, repairs and rest which are lcated within ne (1) rad mile f the natinal netwrk and state highways as set frth by plicy and apprved by the transprtatin bard shall nt exceed a length f... 53 feet. (c) When a mtr vehicle and ne (1) r mre trailers, except as nted in subsectin (3)(b), (3)(d) and (3)(e) f this sectin... 75 feet. (d) When a cmbinatin f semitrailer and trailer, r f tw (2) semitrailers the length in such cmbinatin, including the cnnecting tngue and excluding the truck tractr except as nted belw... 61 feet. When the cmbinatin f semitrailer and trailer r f tw (2) semitrailers including the cnnecting tngues exceeds sixty-ne (61) feet, the length f such cmbinatin including the truck tractr... 75 feet. (e) When a cmbinatin f a semitrailer and trailer, r f tw (2) semitrailers perating n rutes n the natinal netwrk as set frth in 23 CFR 658, and n rutes prviding access between the natinal netwrk and terminals and facilities fr fd, fuel, repairs and rest which are lcated within ne (1) rad mile f the natinal netwrk, the length, including the cnnecting tngue and excluding the truck tractr, shall nt exceed... 68 feet. (f) When a drmedary tractr with semitrailer, stinger-steered by having the kingpin lcated five (5) feet t the rear f the centrid f the rear axle(s)... 75 feet. (g) When a drmedary cmbinatin transprting class 1 explsive materials and/r any munitins-related security material as specified by the U.S. department f defense in cmpliance
with 49 CFR 177.835, nt meeting the stinger-steer requirement as defined in subsectin (3)(f) f this sectin, up t... 75 feet. (h) When a drmedary tractr with semitrailer, nt meeting the stinger-steer requirement as defined in subsectin (3)(f) f this sectin... 65 feet. (i) When an aut transprter r bat transprter, stinger-steered as defined in subsectin (3)(f) f this sectin, excluding frnt and rear verhang f lad... 75 feet. (j) When an aut transprter r bat transprter, nt meeting the stinger-steer requirement as defined in subsectin (3)(f) f this sectin, excluding frnt and rear verhang f lad... 65 feet. (k) When a truck tractr with stinger-steered ple trailer r lg dlly, cnnected by a reach r ple, r a cmbinatin used fr transprting lng lads such as ples, pipes, lgs r structural members generally capable f sustaining themselves as beams between supprting bunks r cnnectins... 75 feet. (4) The verhang r extensin f a lad shall nt extend: (a) Beynd the frnt f a vehicle, mre than... 4 feet. (b) Beynd the end f a vehicle, mre than... 10 feet. (c) Beynd the left fender f a passenger vehicle, mre than... 0 feet. (d) Beynd the right fender f a passenger vehicle, mre than......6 inches. (e) T the frnt and rear cmbined f an aut transprter r bat transprter, mre than... 7 feet. (5) Nncarg-carrying devices necessary fr the safe and efficient peratin f the vehicle, as determined by the bard, shall nt be included in measurement fr length. (6) N cmbinatin shall include mre than three (3) units except when a saddlemunt cmbinatin and the verall length allwed is: (a) On the natinal netwrk... 97 feet. (b) Other than the natinal netwrk... 75 feet. (7) Vehicle cmbinatins cnsisting f nt mre than fur (4) vehicle units with an verall length in excess f the limits f subsectin (3) f this sectin and with an verall cmbinatin length nt t exceed ne hundred fifteen (115) feet, may be perated by permit n rutes designated fr such peratins by the public highway agency having jurisdictin ver that highway system, subject t the fllwing restrictins as t lengths f carg-carrying units: (a) Truck tractr and tw (2) trailing units... 95 feet.
(b) Truck tractr and three (3) trailing units... 95 feet. (c) Truck and tw (2) trailing units... 98 feet. 49-1010. Size f vehicles and lads N vehicle shall exceed the dimensins specified belw, except that certain devices determined by the bard as necessary fr the safe and efficient peratin f mtr vehicles, including energy cnservatin devices, shall be excluded frm the calculatin f width r length. (1) The width f a vehicle, including any lad theren, except as nted belw, shall nt exceed...8 1/2 feet. (a) The limitatins as t size f vehicles stated in this sectin shall nt apply t farm tractrs r t implements f husbandry, including any lad theren, r any trailer nt wider than the implement f husbandry used in the transprtatin f implements f husbandry fr agricultural peratins, and including all equipment used in land leveling peratins, when being incidentally perated upn the highway frm ne (1) farm peratin t anther during daylight hurs. (b) The limitatins as t size f vehicles shall nt apply t farmers r their designated agents, transprting implements f husbandry and equipment listed in paragraph (a) f this subsectin fr the purpse f: (i) The repair r maintenance f such implements f husbandry and equipment when traveling t r frm a farm t a repair r maintenance facility during daylight hurs; r (ii) The purchase r sale f such implements f husbandry and equipment when traveling t r frm a farm t a dealership, auctin huse r ther facility during daylight hurs. (c) Ntwithstanding the exemptin frm width limitatin fr farm tractrs included in paragraph (a) f this subsectin, the ttal utside width f any farm tractr being transprted n the interstate system in this state, except as permitted by sectin 49-1004, Idah Cde, shall nt exceed...9 feet.
(d) A farm tractr r implement f husbandry, when being incidentally transprted upn the highway with a width in excess f the limits f paragraphs (a) and (c) f this subsectin, must display ne (1) red r flurescent range flag a minimum f twelve (12) by twelve (12) inches n the utermst left prjectin f the tractr r implement being transprted. (2) The height f a vehicle, including the lad theren, shall nt exceed...14 feet. (3) The length f a vehicle, r vehicle cmbinatin, except as nted belw shall nt exceed: (a) When a single mtr vehicle...45 feet. (b) When a trailer r semitrailer, except as nted belw...48 feet. 1. Semitrailers perating n rutes determined by the bard t have severe curvature, deficient width and/r heavy traffic cnditins shall be limited t an verall cmbinatin length nt t exceed...65 feet. 2. The length f a trailer tngue, r the length f the tngue f a cnverter gear used t cnvert a semitrailer t a trailer, shall be excluded frm the calculatin f a trailer length. 3. Semitrailers perating n rutes which are a part f the natinal netwrk as set frth in 23 CFR 658, n rutes prviding access between the natinal netwrk and terminals and facilities fr fd, fuel, repairs and rest which are lcated within ne (1) rad mile f the natinal netwrk and state highways as set frth by plicy and apprved by the transprtatin bard shall nt exceed a length f...53 feet. (c) When a mtr vehicle and ne (1) r mre trailers, except as nted in subsectins (3)(b), (3)(d) and (3)(e) f this sectin...75 feet. (d) When a cmbinatin f semitrailer and trailer, r f tw (2) semitrailers the length in such cmbinatin, including the cnnecting tngue and excluding the truck tractr except as nted belw...61 feet.
When the cmbinatin f semitrailer and trailer r f tw (2) semitrailers including the cnnecting tngues exceeds sixty-ne (61) feet, the length f such cmbinatin including the truck tractr...75 feet. (e) When a cmbinatin f a semitrailer and trailer, r f tw (2) semitrailers perating n rutes n the natinal netwrk as set frth in 23 CFR 658, and n rutes prviding access between the natinal netwrk and terminals and facilities fr fd, fuel, repairs and rest which are lcated within ne (1) rad mile f the natinal netwrk, the length, including the cnnecting tngue and excluding the truck tractr, shall nt exceed...68 feet. (f) When a drmedary tractr with semitrailer, stinger-steered by having the kingpin lcated five (5) feet t the rear f the centrid f the rear axle(s)...75 feet. (g) When a drmedary cmbinatin transprting class 1 explsive materials and/r any munitins-related security material as specified by the U.S. department f defense in cmpliance with 49 CFR 177.835, nt meeting the stinger-steer requirement as defined in subsectin (3)(f) f this sectin, up t...75 feet. (h) When a drmedary tractr with semitrailer, nt meeting the stinger-steer requirement as defined in subsectin (3)(f) f this sectin...65 feet. (i) When an aut transprter r bat transprter, stinger-steered as defined in subsectin (3)(f) f this sectin, excluding frnt and rear verhang f lad...75 feet. (j) When an aut transprter r bat transprter, nt meeting the stinger-steer requirement as defined in subsectin (3)(f) f this sectin, excluding frnt and rear verhang f lad...65 feet.
(k) When a truck tractr with stinger-steered ple trailer r lg dlly, cnnected by a reach r ple, r a cmbinatin used fr transprting lng lads such as ples, pipes, lgs r structural members generally capable f sustaining themselves as beams between supprting bunks r cnnectins...75 feet. (4) The verhang r extensin f a lad shall nt extend: (a) Beynd the frnt f a vehicle, mre than...4 feet. (b) Beynd the end f a vehicle, mre than...10 feet. (c) Beynd the left fender f a passenger vehicle, mre than...0 feet. (d) Beynd the right fender f a passenger vehicle, mre than....6 inches. (e) T the frnt and rear cmbined f an aut transprter r bat transprter, mre than...7 feet. (5) Nncarg-carrying devices necessary fr the safe and efficient peratin f the vehicle, as determined by the bard, shall nt be included in measurement fr length. (6) N cmbinatin shall include mre than three (3) units except when a saddlemunt cmbinatin and the verall length allwed is: (a) On the natinal netwrk...97 feet. (b) Other than the natinal netwrk...75 feet. (7) Vehicle cmbinatins cnsisting f nt mre than fur (4) vehicle units with an verall length in excess f the limits f subsectin (3) f this sectin and with an verall cmbinatin length nt t exceed ne hundred fifteen (115) feet, may be perated by permit n rutes designated fr such
peratins by the public highway agency having jurisdictin ver that highway system, subject t the fllwing restrictins as t lengths f carg-carrying units: (a) Truck tractr and tw (2) trailing units...95 feet. (b) Truck tractr and three (3) trailing units...95 feet. (c) Truck and tw (2) trailing units...98 feet. 49-933. Brakes (1) Every mtr vehicle, ther than a mtrcycle r mtr-driven cycle, when perated upn a highway shall be equipped with brakes adequate t cntrl the mvement f and t stp and hld the vehicle, including tw (2) separate means f applying the brakes, each f which means shall be effective t apply the brakes t at least tw (2) wheels. If the tw (2) separate means f applying the brakes are cnnected in any way, they shall be s cnstructed that failure f any ne (1) part f the perating mechanism shall nt leave the mtr vehicle withut brakes n at least tw (2) wheels. (2) Every mtrcycle and every mtr-driven cycle, when perated upn a highway, shall be equipped with at least ne (1) brake, which may be perated by hand r ft. (3) Every trailer r semitrailer f an unladen weight f ne thusand five hundred (1,500) punds r mre when perated upn a highway shall be equipped with brakes adequate t cntrl the mvement f and t stp and hld the vehicle and be designed t be applied by the driver f the twing mtr vehicle frm its cab. The brakes shall be designed and s cnnected that in case f an accidental breakaway f the twed vehicle, the brakes shall be autmatically applied. (4) Every new mtr vehicle, trailer, r semitrailer sld in this state and perated upn the highways shall be equipped with service brakesupn all wheels f the vehicle, except that any mtrcycle r mtr-driven cycle, trucks and truck tractrs having three (3) r mre axles need nt have brakes n the frnt wheels. Vehicles equipped with at least tw (2) steerable axles need nt be equipped with brakes n the wheels f ne (1) axle, and any trailer r semitrailer f less than ne thusand five hundred (1,500) punds unladen weight need nt be equipped with brakes. Every farm trailer while being used hauling agricultural prducts frm farm t strage, marketing r prcessing plant, r returning therefrm, and used within a radius f fifty (50) miles, shall be exempt frm these braking requirements. (5) One (1) f the means f brake peratin shall cnsist f a mechanical cnnectin frm the perating lever, r by equivalent means t thebrake shes r bands, and this brake shall be capable f hlding the vehicle, r cmbinatin f vehicles, statinary under any cnditin f lading n any upgrade r dwngrade upn which it is perated.
(6) Brake shes perating within r upn the drums n the vehicle wheels f any mtr vehicle may be used fr bth service and hand peratin. (7) Every mtr vehicle r cmbinatin f vehicles, at all times and under all cnditins f lading, shall, upn applicatin f the service (ft)brake, be capable f decelerating and develping a braking frce equivalent t minimum required deceleratin, and stpping within the requirements set frth in this subsectin: Equivalent braking frce in percentage f vehicle r Stpping distance Deceleratin in cmbinatin in feet feet per secnd weight Passenger vehicles, 25 17 53.0% nt including buses Single-unit vehicles 30 14 43.5% with a manufacturer's grss vehicle weight rating f less than 10,000 punds Single-unit, 2-axle 40 14 43.5% vehicles with a manufacturer's grss vehicle weight rating f 10,000 r mre punds All ther vehicles and 50 14 43.5% cmbinatins with a manufacturer's grss vehicle weight rating f 10,000 r mre punds Cmpliance with these standards shall be determined either by actual rad tests cnducted n a substantially level, nt t exceed a plus r minus ne per cent (1%) grade, dry, smth, hardsurfaced rad that is free frm lse material, with stpping distances measured frm the actual instant braking cntrls are mved and frm an initial speed f twenty (20) miles per hur; r else by suitable mechanical tests in a testing lane which recreates the same cnditins; r by a cmbinatin f bth methds. (8) All brakes shall be maintained in gd wrking rder and shall be adjusted t perate as equally as practicable with respect t the wheels n ppsite sides f the vehicle.
49-906. Tail lamps (1) Every mtr vehicle, trailer, semitrailer, and ple trailer, and any ther vehicle which is being drawn at the end f a train f vehicles, shall be equipped with at least ne (1) tail lamp munted n the rear, which when lighted as required, shall emit a red light plainly visible frm a distance f five hundred (500) feet t the rear. In the case f a train f vehicles nly the tail lamp n the rearmst vehicle need actually be seen frm the distance specified. Every mentined vehicle, ther than a truck tractr, registered in this state and manufactured r assembled after December 31, 1955, shall be equipped with at least tw (2) tail lamps munted n the rear, which when lighted as required, shall cmply with the prvisins f this sectin. (2) Every tail lamp upn every vehicle shall be lcated at a height f nt mre than seventy-tw (72) inches nr less than twenty (20) inches. (3) Any tail lamp shall be wired s t be lighted whenever the head lamps r auxiliary driving lamps are lighted. (4) Nthing herein shall prhibit the display n any vehicle thirty (30) years r lder f tail lamps cntaining a blue r purple insert lens nt t exceed ne (1) inch in diameter, prvided the tail lamp r lamps therwise cmply with the requirements f this sectin. 49-921. Rear munted acceleratin and deceleratin lighting system (1) Every mtr vehicle, trailer, semitrailer, truck tractr, and ple trailer used in the state may be equipped with an auxiliary lighting system cnsisting f: (a) One (1) green light t be activated when the acceleratr f the mtr vehicle is depressed; (b) Nt mre than tw (2) amber lights t be activated when the mtr vehicle is mving frward, r standing and idling, but is nt under the pwer f the engine. (2) An auxiliary system shall nt interfere with the peratin f vehicle tail lamps and shall nt interfere with the peratin f vehicle signal lamps and signal devices. The system may perate in cnjunctin with tail lamps r signal lamps and signal devices. (3) Only ne (1) clr f the system may be illuminated at any ne (1) time, and at all times either the green light, r amber light r lightsshall be illuminated when the tail lamps f the vehicle are nt illuminated. (4) The green light and the amber light r lights, when illuminated, shall be plainly visible at a distance f five hundred (500) feet t the rear.
(5) Only ne (1) system may be munted n a mtr vehicle, trailer, semitrailer, truck tractr, r ple trailer; and the system shall be rear munted in a hrizntal fashin, at a height f nt mre than seventy-tw (72) inches, nr less than twenty (20) inches. (6) On a cmbinatin f vehicles, nly the lights f the rearmst vehicle need actually be seen and distinguished as prvided in subsectin (4) f this sectin. (7) Each manufacturer's mdel f such a system described in this sectin shall be apprved by the bard befre it may be sld r ffered fr sale in the state. 49-940. Mirrrs (1) Every mtr vehicle shall be equipped with a mirrr s lcated as t reflect t the peratr a view f the highway fr a distance f at least tw hundred (200) feet t the rear f the vehicle. (2) When a mtr vehicle is s laded r cnstructed, r is twing a vehicle r trailer which is s laded r cnstructed, as t bstruct the driver's view straight t the rear, then the mtr vehicle shall be equipped with a mirrr n the left side and a mirrr n the right side s lcated as t reflect t the peratr a view f the highway fr a distance f at least tw hundred (200) feet t the rear f the vehicle. (3) When an peratr f a mtr vehicle is transprting under special permit authrity an versize lad which makes mirrrs impractical devices fr reflecting t the peratr a view f the highway t the rear, a fllwing escrt vehicle equipped with prper mirrrs meeting the requirements herein may be substituted fr the required mirrrs n the hauling mtr vehicle. The escrt vehicle must be a car r light truck and it must be equipped with an versize lad sign, flashing r rtating lights, and a tw (2) way radi which prvides full-time cmmunicatin with the escrted vehicle. http://adminrules.idah.gv/rules/current/39/0307.pdf - 39.03.07 - RULES GOVERNING RESTRICTED ROUTES FOR SEMITRAILERS