1、289 Federal Highway Administration, DOT Pt. 658 October 1 following submission of a vehicle size and weight enforcement plan 2. Medium term24 years after submis-sion of the enforcement plan 3. Long term5 years beyond the submis-sion of the enforcement plan 4. Provision for annual review and update o
2、f vehicle size and weight enforcement plan E. Evaluation The evaluation of an existing plan, in com-parison to goals for strengthening the en-forcement program, is a difficult task, espe-cially since there is very limited experience nationwide. The FHWA plans to approach this objec-tive through a co
3、ntinued cooperative effort with State and other enforcement agencies by gathering useful information and experi-ence on elements of enforcement practices that produce positive results. It is not considered practicable at this time to establish objective minimums, such as the number of vehicles to be
4、 weighed by each State, as a requirement for satisfactory compliance. However, the States will want to know as many specifics as possible about what measuring tools will be used to evalu-ate their annual certifications for adequacy. The above discussion goes to the heart of the question concerning n
5、umerical criteria. The assumption that a certain number of weighings will provide a maximum or even satisfactory deterrent is not supportable. The enforcement of vehicle size and weight laws requires that vehicles be weighed but it does not logically follow that the more vehi-cles weighed, the more
6、effective the enforce-ment program, especially if the vehicles are weighed at a limited number of fixed loca-tions. A numbers game does not nec-essarily provide a deterrent to deliberate overloading. Consistent, vigorous enforce-ment activities, the certainty of apprehen-sion and of penalty, the ade
7、quacy of the pen-alty, even the publicity given these factors, may be greater deterrents than the number of weighings alone. In recognizing that all States are unique in character, there are some similarities be-tween certain States and useful perspectives may be obtained by relating their program e
8、lements. Some comparative factors are: 1. Truck registration (excluding pickups and panels) 2. Population 3. Average Daily Traffic (ADT) for trucks on FA highways 4. To total mileage of Federal-aid high-ways 5. Geographic location of the State 6. Annual truck miles traveled in State 7. Number of tru
9、ck terminals (over 6 doors) 8. Vehicle miles of intrastate truck traffic Quantities relating to the above items can become factors that in the aggregate are de-scriptive of a States characteristics and can identify States that are similar from a trucking operation viewpoint. This is espe-cially appl
10、icable for States within the same area. After States with similar truck traffic op-erations have been identified in a regional area, another important variable must be considered: the type of weighing equipment that has been or is proposed for predominant use in the States. When data become avail-ab
11、le on the number of trucks weighed by each type of scale (fixed, portable, semi-port-able, etc.) some indicators will be developed to relate one States effort to those of other States. The measures of activity that are a part of each certification submitted will pro-vide a basis for the development
12、of more pre-cise numerical criteria by which an enforce-ment plan and its activities can be judged for adequacy. Previous certifications have provided in-formation from which the following gross scale capabilities have been derived. Potential Weighing Capacities 1. Permanent scales 60 veh/hr. 2. Wei
13、gh-in-motion scales 100 veh/hr. 3. Semi-portable scales 25 veh/hr. 4. Portable scales 3 veh/hr. To meet the mandates of Federal and other laws regarding truck size and weight en-forcement, the FHWA desires to become a re-source for all States in achieving a success-ful exchange of useful information
14、. Some States are more advanced in their enforce-ment activities. Some have special experi-ence with portable, semi-portable, fixed, or weighing-in-motion devices. Others have op-erated permanent scales in combination with concentrated safety inspection programs. The FHWA is interested in informatio
15、n on individual State experiences in these special-ized areas as part of initial plan submissions. If such information has recently been fur-nished to the Washington Headquarters, an appropriate cross reference should be in-cluded on the submission. It is the policy of the FHWA to avoid red tape, an
16、d information volunteered by the States will be of assistance in meeting many needs. The ultimate goal in developing infor-mation through the evaluation process is to assemble criteria for a model enforcement program. PART 658TRUCK SIZE AND WEIGHT, ROUTE DESIGNATIONS LENGTH, WIDTH AND WEIGHT LIMITAT
17、IONS Sec. 658.1 Purpose. 658.3 Policy statement. 658.5 Definitions. 658.7 Applicability. VerDate Mar2010 09:39 May 11, 2011 Jkt 223076 PO 00000 Frm 00299 Fmt 8010 Sfmt 8010 Y:SGML223076.XXX 223076wwoods2 on DSK1DXX6B1PROD with CFRProvided by IHSNot for ResaleNo reproduction or networking permitted w
18、ithout license from IHS-,-,-290 23 CFR Ch. I (4111 Edition) 658.1 658.9 National Network criteria. 658.11 Additions, deletions, exceptions, and restrictions. 658.13 Length. 658.15 Width. 658.16 Exclusions from length and width de-terminations. 658.17 Weight. 658.19 Reasonable access. 658.21 Identifi
19、cation of National Network. 658.23 LCV freeze; cargo-carrying unit freeze. APPENDIX A TO PART 658NATIONAL NET-WORKFEDERALLY-DESIGNATED ROUTES APPENDIX B TO PART 658GRANDFATHERED SEMITRAILER LENGTHS APPENDIX C TO PART 658TRUCKS OVER 80,000 POUNDS ON THE INTERSTATE SYSTEM AND TRUCKS OVER STAA LENGTHS
20、ON THE NA-TIONAL NETWORK APPENDIX D TO PART 658DEVICES THAT ARE EXCLUDED FROM MEASUREMENT OF THE LENGTH OR WIDTH OF A COMMERCIAL MOTOR VEHICLE AUTHORITY: 23 U.S.C. 127 and 315; 49 U.S.C. 31111, 31112, and 31114; sec. 347, Pub. L. 1087, 117 Stat. 419; sec, 756, Pub. L. 10958, 119 Stat. 829; sec. 1309
21、, Pub. L. 10959, 119 Stat. 1219; sec. 115, Pub. L. 109115, 119 Stat. 2408; 49 CFR 1.48(b)(19) and (c)(19). SOURCE: 49 FR 23315, June 5, 1984, unless otherwise noted. 658.1 Purpose. The purpose of this part is to identify a National Network of highways avail-able to vehicles authorized by provi-sions
22、 of the Surface Transportation As-sistance Act of 1982 (STAA) as amend-ed, and to prescribe national policies that govern truck and bus size and weight. 59 FR 30419, June 13, 1994 658.3 Policy statement. The Federal Highway Administra-tions (FHWA) policy is to provide a safe and efficient National N
23、etwork of highways that can safely and effi-ciently accommodate the large vehi-cles authorized by the STAA. This net-work includes the Interstate System plus other qualifying Federal-aid Pri-mary System Highways. 658.5 Definitions. Automobile transporters. Any vehicle combination designed and used s
24、pecifi-cally for the transport of assembled highway vehicles, including truck camper units. Beverage semitrailer. A van-type, drop- frame semitrailer designed and used specifically for the transport and deliv-ery of bottled or canned beverages (i.e., liquids for drinking, including water) which has
25、side-only access for loading and unloading this commodity. Semitrailer has the same meaning as in 49 CFR 390.5. Boat transporters. Any vehicle com-bination designed and used specifically to transport assembled boats and boat hulls. Boats may be partially disassem-bled to facilitate transporting. Bri
26、dge gross weight formula. The standard specifying the relationship between axle (or groups of axles) spac-ing and the gross weight that (those) axle(s) may carry expressed by the for-mula: WLNNN=+500112 36where W=overall gross weight on any group of two or more consecutive axles to the nearest 500 p
27、ounds, L=distance in feet be-tween the extreme of any group of two or more consecutive axles, and N=number of axles in the group under consideration. Cargo-carrying unit. As used in this part, cargo-carrying unit means any portion of a commercial motor vehicle (CMV) combination (other than a truck t
28、ractor) used for the carrying of cargo, including a trailer, semitrailer, or the cargo-carrying section of a single-unit truck. The length of the cargo carrying units of a CMV with two or more such units is measured from the front of the first unit to the rear of the last in-cluding the hitch(es) be
29、tween the units. Commercial motor vehicle. For pur-poses of this regulation, a motor vehi-cle designed or regularly used to carry freight, merchandise, or more than ten passengers, whether loaded or empty, including buses, but not including vehi-cles used for vanpools, or recreational vehicles opera
30、ting under their own power. Drive-away saddlemount vehicle trans-porter combination. The term drive- away saddlemount vehicle transporter combination means a vehicle combina-tion designed and specifically used to tow up to 3 trucks or truck tractors, each connected by a saddle to the VerDate Mar2010
31、 09:39 May 11, 2011 Jkt 223076 PO 00000 Frm 00300 Fmt 8010 Sfmt 8010 Y:SGML223076.XXX 223076EC14OC91.011wwoods2 on DSK1DXX6B1PROD with CFRProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-291 Federal Highway Administration, DOT 658.5 frame or fifth whe
32、el of the forward ve-hicle of the truck tractor in front of it. Such combinations may include up to one fullmount. Dromedary unit. A box, deck, or plate mounted behind the cab and forward of the fifth wheel on the frame of the power unit of a truck tractor- semitrailer combination. Federal-aid Prima
33、ry System. The Fed-eral-aid Highway System of rural arte-rials and their extensions into or through urban areas in existence on June 1, 1991, as described in 23 U.S.C. 103(b) in effect at that time. Fullmount. A fullmount is a smaller vehicle mounted completely on the frame of either the first or la
34、st vehicle in a saddlemount combination. Interstate System. The National Sys-tem of Interstate and Defense High-ways described in sections 103(e) and 139(a) of Title 23, U.S.C. For the pur-pose of this regulation this system in-cludes toll roads designated as Inter-state. Length exclusive devices. D
35、evices ex-cluded from the measurement of vehi-cle length. Such devices shall not be designed or used to carry cargo. Longer combination vehicle (LCV). As used in this part, longer combination vehicle means any combination of a truck tractor and two or more trailers or semitrailers which operates on
36、the Interstate System at a gross vehicle weight greater than 80,000 pounds. Maxi-cube vehicle. A maxi-cube vehi-cle is a combination vehicle consisting of a power unit and a trailing unit, both of which are designed to carry cargo. The power unit is a nonarticu-lated truck with one or more drive axl
37、es that carries either a detachable or a permanently attached cargo box. The trailing unit is a trailer or semitrailer with a cargo box so de-signed that the power unit may be loaded and unloaded through the trail-ing unit. Neither cargo box shall ex-ceed 34 feet in length, excluding draw-bar or hit
38、ching device; the distance from the front of the first to the rear of the second cargo box shall not exceed 60 feet, including the space between the cargo boxes; and the overall length of the combination vehicle shall not ex-ceed 65 feet, including the space be-tween the cargo boxes. Motor carrier o
39、f passengers. As used in this part, a motor carrier of passengers is a common, contract, or private car-rier using a bus to provide commercial transportation of passengers. Bus has the same meaning as in 49 CFR 390.5. National Network (NN). The composite of the individual network of highways from ea
40、ch State on which vehicles au-thorized by the provisions of the STAA are allowed to operate. The network in each State includes the Interstate Sys-tem, exclusive of those portions ex-cepted under 658.11(f) or deleted under 658.11(d), and those portions of the Federal-aid Primary System in exist-ence
41、 on June 1, 1991, set out by the FHWA in appendix A to this part. Nondivisible load or vehicle. (1) As used in this part, nondivisible means any load or vehicle exceeding applicable length or weight limits which, if separated into smaller loads or vehicles, would: (i) Compromise the intended use of
42、the vehicle, i.e., make it unable to per-form the function for which it was in-tended; (ii) Destroy the value of the load or vehicle, i.e., make it unusable for its intended purpose; or (iii) Require more than 8 workhours to dismantle using appropriate equip-ment. The applicant for a nondivisible lo
43、ad permit has the burden of proof as to the number of workhours required to dismantle the load. (2) A State may treat as nondivisible loads or vehicles: emergency response vehicles, including those loaded with salt, sand, chemicals or a combination thereof, with or without a plow or blade attached i
44、n front, and being used for the purpose of spreading the mate-rial on highways that are or may be-come slick or icy; casks designed for the transport of spent nuclear mate-rials; and military vehicles trans-porting marked military equipment or materiel. Over-the-road bus. The term over-the- road bus
45、 means a bus characterized by an elevated passenger deck located over a baggage compartment, and typi-cally operating on the Interstate Sys-tem or roads previously designated as making up the Federal-aid Primary System. VerDate Mar2010 09:39 May 11, 2011 Jkt 223076 PO 00000 Frm 00301 Fmt 8010 Sfmt 8
46、010 Y:SGML223076.XXX 223076wwoods2 on DSK1DXX6B1PROD with CFRProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-292 23 CFR Ch. I (4111 Edition) 658.7 Saddlemount combination. A saddlemount combination is a com-bination of vehicles in which a truck or tr
47、uck tractor tows one or more trucks or truck tractors, each connected by a saddle to the frame or fifth wheel of the vehicle in front of it. The saddle is a mechanism that connects the front axle of the towed vehicle to the frame or fifth wheel of the vehicle in front and functions like a fifth whee
48、l king-pin connection. When two vehicles are towed in this manner the combination is called a double saddlemount com-bination. When three vehicles are towed in this manner, the combination is called a triple saddlemount combina-tion. Single axle weight. The total weight transmitted to the road by al
49、l wheels whose centers may be included between two parallel transverse vertical planes 40 inches apart, extending across the full width of the vehicle. The Federal single axle weight limit on the Inter-state System is 20,000 pounds. Special mobile equipment. Every self- propelled vehicle not designed or used primarily for the transportation of per-sons or property and incidentally oper-ated or moved over the highways, in-cluding military equipment, farm
