2017 ORS 802.560¹
Multistate Highway Transportation Agreement

The Multistate Highway Transportation Agreement is hereby enacted into law and entered into on behalf of this state with all other jurisdictions legally joining therein in a form substantially as follows:




SECTION 1. Findings. The participating jurisdictions find that:

(a) The expanding regional economy depends on expanding transportation capacity;

(b) Highway transportation is the major mode for movement of people and goods in the western states;

(c) Uniform application in the west of more adequate vehicle size and weight standards will result in a reduction of pollution, congestion, fuel consumption and related transportation costs, which are necessary to permit increased productivity;

(d) A number of western states, already having adopted substantially the 1964 Bureau of Public Roads recommended vehicle size and weight standards, still find current federal limits more restrictive; and

(e) The participating jurisdictions are most capable of developing vehicle size and weight standards most appropriate for the regional economy and transportation requirements, consistent with and in recognition of principles of highway safety.

SECTION 2. Purposes. The purposes of this agreement are to:

(a) Adhere to the principle that each participating jurisdiction should have the freedom to develop vehicle size and weight standards that it determines to be most appropriate to its economy and highway system.

(b) Establish a system authorizing the operation of vehicles traveling between two (2) or more participating jurisdictions at more adequate size and weight standards.

(c) Promote uniformity among participating jurisdictions in vehicle size and weight standards on the basis of the objectives set forth in this agreement.

(d) Secure uniformity insofar as possible, of administrative procedures in the enforcement of recommended vehicle size and weight standards.

(e) Provide means for the encouragement and utilization of research which will facilitate the achievement of the foregoing purposes, with due regard for the findings set forth in section 1 of this article.

(f) Facilitate communication among legislators, state transportation administrators and commercial industry representatives in addressing the emerging highway transportation issues in participating jurisdictions.



SECTION 1. As used in this agreement:

(a) “Cooperating committee” means a body composed of the designated representatives from the participating jurisdictions.

(b) “Designated representative” means a legislator authorized to represent the jurisdiction appointed by the President of the Senate and the Speaker of the House of Representatives in consultation.

(c) “Jurisdiction” means a state of the United States or the District of Columbia.

(d) “Vehicle” means any vehicle as defined by statute to be subject to size and weight standards which operates in two or more participating jurisdictions.



SECTION 1. Qualifications for Membership. Participation in this agreement is open to jurisdictions which subscribe to the findings, purposes and objectives of this agreement and will seek legislation necessary to accomplish these objectives.

SECTION 2. Cooperation. The participating jurisdictions, working through their designated representatives, shall cooperate and assist each other in achieving the desired goals of this agreement pursuant to appropriate statutory authority.

SECTION 3. Effect of Headings. Article and section headings contained herein shall not be deemed to govern, limit, modify, or in any manner affect the scope, meaning, or intent of the provisions of any article or section hereof.

SECTION 4. Vehicle Laws and Regulations. This agreement shall not authorize the operation of a vehicle in any participating jurisdiction contrary to the laws or regulations thereof.

SECTION 5. Interpretation. The final decision regarding interpretation of questions at issue relating to this agreement shall be reached by unanimous joint action of the participating jurisdictions, acting through the designated representatives. Results of all such actions shall be placed in writing.

SECTION 6. Amendment. This agreement may be amended by unanimous joint action of the participating jurisdictions, acting through the officials thereof authorized to enter into this agreement, subject to the requirements of section 4, Article III. Any amendment shall be placed in writing and become a part hereof.

SECTION 7. Restrictions, Conditions or Limitations. Any jurisdiction entering this agreement shall provide each other participating jurisdiction with a list of any restriction, condition or limitation on the general terms of this agreement, if any.

SECTION 8. Additional Jurisdictions. Additional jurisdictions may become members of this agreement by signing and accepting the terms of the agreement.



SECTION 1. Each participating jurisdiction shall have two designated representatives. Pursuant to section 2, Article III, the designated representatives of the participating jurisdictions shall constitute a committee which shall have the power to:

(a) Collect, correlate, analyze and evaluate information resulting or derivable from research and testing activities in relation to vehicle size and weight related matters.

(b) Recommend and encourage the undertaking of research and testing in any aspect of vehicle size and weight or related matter when, in their collective judgment, appropriate or sufficient research or testing has not been undertaken.

(c) Recommend changes in law or policy with emphasis on compatibility of laws and uniformity of administrative rules or regulations which would promote effective governmental action or coordination in the field of vehicle size and weight related matters.

(d) Recommend improvements in highway operations, in vehicular safety and in state administration of highway transportation laws.

(e) Perform functions necessary to facilitate the purposes of this agreement.

SECTION 2. Each designated representative of a participating jurisdiction shall be entitled to one (1) vote. No action of the committee shall be approved unless a majority of the total number of votes cast by the designated representatives of the participating jurisdictions are in favor thereof.

SECTION 3. The committee shall meet at least once annually and shall elect, from among its members, a chairman, a vice-chairman and a secretary.

SECTION 4. The committee shall submit annually to the legislature of each participating jurisdiction a report setting forth the work of the committee during the preceding year and including recommendations developed by the committee. The committee may submit such additional reports as it deems appropriate or desirable.




SECTION 1. Objectives. The participating jurisdictions hereby declare that:

(a) It is the objective of the participating jurisdictions to obtain more efficient and more economical transportation by motor vehicles between and among the participating jurisdictions by encouraging the adoption of standards that will, as minimums, allow the operation on all State highways, except those determined through engineering evaluation to be inadequate, with a single-axle weight of 20,000 pounds, a tandem-axle weight of 34,000 pounds, and a gross vehicle or combination weight of that resulting from application of the formula:

W = 500 ((LN/N - 1) + 12N + 36)

where W = maximum weight in pounds

carried on any group of two or more

axles computed to nearest 500 pounds.

L = distance in feet between

the extremes of any group of two

or more consecutive axles.

N = number of axles in group

under consideration.

(b) It is the further objective of the participating jurisdictions that the operation in interstate commerce of a vehicle or combination of vehicles that exceeds statutory maximum weights or statutory maximum lengths be authorized under special permit authority by each participating jurisdiction.

(c) It is the further objective of the participating jurisdictions to facilitate and expedite the operation of any vehicle or combination of vehicles between and among the participating jurisdictions under the provisions of subsection (a) or (b) of this section, and to that end the participating jurisdictions hereby agree, through their designated representatives, to meet and cooperate in the consideration of vehicle size and weight related matters including, but not limited to, the development of: uniform enforcement procedures; additional vehicle size and weight standards; operational standards; agreements or compacts to facilitate regional application and administration of vehicle size and weight standards; uniform permit procedures; uniform application forms; rules and regulations for the operation of vehicles, including equipment requirements, driver qualifications, and operating practices; and such other matters as may be pertinent.

(d) It is the further objective of the participating jurisdictions to authorize the cooperating committee to recommend that the participating jurisdictions jointly secure congressional approval of this agreement and, specifically, of the vehicle size and weight standards set forth in subsection (a) of this section.

(e) It is the further objective of the participating jurisdictions to:

(1) Establish transportation laws and regulations to meet regional economic needs and to promote an efficient, safe and consistent transportation network;

(2) Develop standards that facilitate the most efficient and environmentally sound operation of vehicles on highways consistent with and in recognition of principles of highway safety; and

(3) Establish programs to increase productivity and reduce congestion, fuel consumption and related transportation costs and enhance air quality through the uniform application of state vehicle regulations and laws.

(f) It is the further objective of the participating jurisdictions that in carrying out subsection (e) of this section, the participating jurisdictions shall give priority to ensuring the long term financial stability of the highway infrastructure, considering the net benefits across all modes and all segments of industry and society and not focusing on incremental changes where there is no long term guiding policy.



SECTION 1. This agreement shall enter into force when enacted into law by any two (2) or more jurisdictions. Thereafter, this agreement shall become effective as to any other jurisdiction upon its enactment thereof, except as otherwise provided in section 8, Article III.

SECTION 2. Any participating jurisdiction may withdraw from this agreement by canceling the same but no such withdrawal shall take effect until thirty (30) days after the designated representative of the withdrawing jurisdiction has given notice in writing of the withdrawal to all other participating jurisdictions.



SECTION 1. This agreement shall be liberally construed so as to effectuate the purposes thereof.

SECTION 2. The provisions of this agreement shall be severable and if any phrase, clause, sentence or provision of this agreement is declared to be contrary to the constitution of any participating jurisdiction or the applicability thereto to any government, agency, person or circumstance is held invalid, the validity of the remainder of this agreement shall not be affected thereby. If this agreement shall be held contrary to the constitution of any jurisdiction participating herein, the agreement shall remain in full force and effect as to the jurisdictions affected as to all severable matters.


SECTION 1. A copy of this agreement, its amendments, and rules or regulations promulgated thereunder and interpretations thereof shall be filed in the highway department in each participating jurisdiction and shall be made available for review by interested parties.



SECTION 1. All existing statutes prescribing weight and size standards and all existing statutes relating to special permits shall continue to be of force and effect until amended or repealed by law.





SECTION 1. Within appropriations available therefor, the departments, agencies and officers of the government of this state shall cooperate with and assist the cooperating committee within the scope contemplated by Article IV, section 1(a) and (b) of the agreement. The departments, agencies and officers of the government of this state are authorized generally to cooperate with said cooperating committee.

______________________________________________________________________________ [1983 c.338 §172; 1985 c.172 §5; 2001 c.610 §1]

1 Legislative Counsel Committee, CHAPTER 802—Administrative Provisions, https://­www.­oregonlegislature.­gov/­bills_laws/­ors/­ors802.­html (2017) (last ac­cessed Mar. 30, 2018).
2 OregonLaws.org contains the con­tents of Volume 21 of the ORS, inserted along­side the per­tin­ent statutes. See the preface to the ORS An­no­ta­tions for more information.
3 OregonLaws.org assembles these lists by analyzing references between Sections. Each listed item refers back to the current Section in its own text. The result reveals relationships in the code that may not have otherwise been apparent.