1、UNITED STATES NUMBERED HIGHWAYS 1989 EDITION Published by the American Assocktion of State Highway and Tra 444 North Capitol Street, N.W., Su Washington, D.C. 2#0t UNITED STATES NUMBERED HIGHWAYS 1989 EDITION Published by the American Association of State Highway and Transportation Officials 444 Nor
2、th Capitol Street, N.W., Suite 225 Washington, D.C. 20001 Copyright, 1989, by the American Association of State Highway and Transportation Officials, Inc. A/ Rights Reserved. Printed in the United States of America. This book, or parts thereof, may not be reproduced in any form without permission of
3、 the publishers. AMERICAN ASSOCIATION OF STATE HIGHWAY AND TRANSPORTATION OFFICIALS EXECUTIVE COMMITTEE 1989 President: James P. Pie, Michigan Vice President: Kermit Justice, Delaware Secretary: Clyde E. Pyers, Maryland Immediate Past President: Leno Menghini, Wyoming Elected Regional Members: Regio
4、n I Susan B. Crampton, Vermont 1989 Dana Connors, Maine 1990 Region II James Harrington, North Carolina 1989 Neil Wagoner, Louisiana, 1990 Eugene McCormick, Illinois 1989 Bernard Hurst, Ohio 1990 Region i Region IV Charles L. Miller, Arizona 1989 Garth F. Dull, Nevada 1990 Chairpersons of the Standi
5、ng Committees: Duane Berentson, Washington, Administration Frederick P. Salvucci, Massachusetts, Planning Raymond E. Stotzer, Jr., Texas, Highways Ronald Fiedler, Wisconsin, Highway Traffic Safety Franklin E. White, New York, Water Transportation Hal Rives, Georgia, Aviation Ray D. Pethtel, Virginia
6、, Public Transportation Horace B. Edwards, Kansas, Railway Conference Robert N. Bothman, Oregon, Research Arthur J. Rock, Jr., Vermont, Special Committee on Commissioners while the regular number is used to obviate passing through the congested part of the city. This “Business Route” connects with t
7、he regular numbered route at the opposite side of the city limits. “Business Route” numbering shall be established by the placing of a standard strip carrying the words “Business Route” on the staff above the U.S. shield. By-pass: A “By-Pass Route” or a “Relief Route” is a route which is established
8、 for the purpose of designating a route which entirely by-passes a city or congested area and joins in with the regular numbered route beyond the city or congested area. V This enables the regular number to be carried both through the city and around the city without either designation carrying any
9、other sign or lettering showing a preference. The “By-pass Route” or “Relief Route” shall be designated by the erection of a standard strip on the staff carrying the U.S. shield, on which are the words “By- Pass” or “Relief Route,” as local preference may dictate. Alternate Route: An “Alternate Rout
10、e” shall be considered a route which starts at a point where it branches off from the main numbered route, may pass through certain cities and towns, and then connect back with the regular route some miles distant. Since it is the purpose of the U.S. numbered system to mark the best and shortest rou
11、te available, an alternate route should be designated only where both routes are needed to accommodate the traffic demand, and when the alternate route has substantially the same geometric and structural design standards of the main marked routing. It is recommended that in case an alternate route i
12、s marked, that the shorter and better constructed route be given the regular number and the other section designated as the “Alternate Route”. It is further recommended that the Highway Department erect signs at the junction points of the regular and alternate routes giving the distance between the
13、cities or points concerned. The State Highway Departments involved in the establishment of “Alternate” routes shall adopt the same procedure with the Executive Committee of the Association as applied to the creation of a new route. The “Alternate Route” shall be marked by the erection of signs beari
14、ng the same U.S. number as the regular route and above the shield shall carry a standard strip with the words “Alternate Route”. In no instance should an alternate routing be used for the purpose of keeping an obsolete section on the U.S. numbered system after a new routing has been con- structed an
15、d available to traffic. Temporary Route: In the erection of signs for numbering routes, it is necessary in some cases to carry a number temporarily over a road that ultimately will not be the permanent location of that number. Great care should be taken by the State Highway Departments in seeing tha
16、t when numbers of this character are permitted, that a standard strip carrying the words “Temporary Route” shall be placed on the staff above the number. This will obviate much hard feeling when it is necessary to change a number to the permanently established route. The word “Temporary” on a standa
17、rd strip above the regular U.S. numbered shield should also be used where it is necessary to establish a detour. Established Policies 1. 2. 3. 4. The Executive Committee of the American Association of State Highway and Transportation Officials shall have full authority to review the U.S. numbered ro
18、ad system and the numbering and marking thereof, to make additions, changes, extensions, revisions or reductions in said road system and to revise the number- ing or marking thereof. Before approving any addition, change, extension, revision or reduction in the U.S. numbered road system or the numbe
19、ring or marking of any U.S. numbered road, the Executive Committee shall consult the State Highway Department of the State or States through or within which such addition, change, extension, revision or reduction is located. The State Highway Department, by a favorable vote on the adoption of this p
20、ro- gram and policy, agrees and pledges its good faith that it will not erect U.S. markers on any road or take down or change the US. markers on any road without the authorization, consent or approval of the Executive Committee of the American Association of State Highway Officials, notwithstanding
21、the fact that the changes proposed are entirely within that State. No additional road shall be added to the U.S. numbered road system, and no existing U.S. road shall be extended except where there is a definite showing of an adequately improved highway carrying an established and necessary line of
22、interstate traffic not otherwise provided for by existing U.S. routes and for which traffic adequate service cannot be provided by State route numbers. Extension of present U.S. numbered routes may be made only when the pro- posed extension is in the general direction of the present route. vi 5. 6.
23、7. 8. 9. 1 o. 11. 12. 13. 14. Proposed extensions shall not be made when, to do so, it is necessary to duplicate U.S. routes already established, unless the duplication is for a short distance and the routes then diverge, ending in different terminal points. No new U.S. route located wholly in one S
24、tate shall be established. U.S. routes, less than three hundred miles in length, heretofore established and located wholly in one State, shall be eliminated either by consolidation with other U.S. routes or by reverting to State routes, as rapidly as the State Highway Department and the Executive Co
25、mmittee of the American Association of State Highway and Transportation Officials can reach agreement with reference thereto. The Executive Committee shall encourage the State Highway Departments in the development of continuous State route numbers extending into two or more States rather than the e
26、stablishment of additional US. numbered routes, and shall encourage the substitution of continuously numbered State routes for relatively short U.S. routes now located in two or more States. No new divided numbers (such as U.S. 96-W and U.S. 96-E, etc.) shall be adopted. Existing divided U.S. number
27、s shall be eliminated as rapidly as the State Highway Department and the Executive Committee can reach agreement with reference thereto. Existing U.S. routes shall be consolidated, improved and shortened. (a) By connecting two or more relatively short routes into one longer route. (b) By relocating
28、portions of existing routes so as to follow newer, better or shorter roads. (c) By establishment of new numbers, following in general existing U.S. numbered routes but taking advantage of new roads or short cuts where the changing of present numbers is not practical. A suitable highway legend, which
29、 may be copyrighted, shall be adopted by the Executive Committee. Such legend will be recommended for use to all travel map makers, also for use by the State Highway Departments. This legend is to show, in a uniform manner, the suitability for travel not only of the U.S. numbered routes but also of
30、State routes. Any proposal that would exploit the prestige of the US. numbered highway system to direct traffic over routes that are not the shortest and best available between major control points on the system, especially when it appears to be for the purpose of benefiting businesses located along
31、 such a proposed route, shall contitute reason for denying any application to make such an addition to the system. Since the U.S. numbered system was established by joint action of the State Highway Departments, only those applications for changes in or additions to the U.S. numbered system from the
32、 member State Highway Department involved shall be considered by the Executive Committee. Those local officials, organiza- tions, groups, or individuals interested in a change or in an addition to the system should contact their State Highway Department and not the Executive Commit- tee. The Executi
33、ve Committee shall consider only those applications from State Highway Departments that are filed on the official form and are complete in all detail to the degree that the Executive Committee can evaluate the need for and adequacy of the proposed route from the application form submitted and withou
34、t a representative of the State Highway Department appearing before Committee to supply additional information. No person or group of persons shall be allowed to appear either before the Ex- ecutive Committee or its Special Committee on U.S. Route Numbering except in the case of a State Highway Depa
35、rtment requesting reconsideration of an action by.the Executive Committee in regard to an application filed by that Department. In case a proposed change in or addition to the U.S. numbered system involves two or more States, the proposal shall be given official consideration only when all affected
36、State Highway Departments have filed applications to cover the com- plete proposal. No route should be considered for inclusion in the US. numbered system that does not substantially meet the current AASHTO design standards. 15. Any toll highway facility may be included in the U.S. Numbered System w
37、hen it meets all the criteria for inclusion, and when the request for the marking originates with the official authority having jurisdiction over the toll facility and the request is directed to AASHTO and supported by the appropriate Member Department. The word “Toll” shall appear over the official
38、 U.S. Route Marker and a toll free routing between the same termini shall continue to be retained and marked as a part of the U.S. Numbered System. These purposes and policies, having been amended and approved by the State Highways Departments after individual State consideration, the Executive Comm
39、it- tee of the American Association of State Highway and Transportation Off icials hereby promulgates and makes effective these policies upon the authority of the State Highway Departments, beginning September 15, 1970. It is realized that this work is a continuing obligation and that even reforms m
40、ade evident from past experiences cannot be accomplished at once. It is the judgment of those to whom this obligation has been delegated, that all far-seeing citizens will aid the State Highway Departments in their efforts to make this numbering system of the greatest use to the traveling public. In
41、 this connection it should be noted that while additional routes for U.S. number- ing will be greatly limited, that stress will be laid upon the availability of many State numbered routes for interstate travel. Map makers will be urged to recognize U.S. numbered roads and well established State numb
42、ered roads as of equal importance-both to be printed in the same color. IN THE ESTABLISHMENT OF A MARKING SYSTEM OF THE ROUTES COMPRISING THE NATIONAL SYSTEM OF INTERSTATE AND DEFENSE HIGHWAYS (Adopted August 14, 1957, Revised August IO, 1973) The National System of Interstate and Defense highways k
43、nown as the “Interstate System” will be a part of the State Highway systems of the several States and the District of Columbia and will therefore be maintained, operated and policed by those jurisdictions. It therefore becomes the responsibility of the several states to mark and number the System. S
44、ince these highways join centers of population and defense establishments and join with the major international highways at the Mexican and Canadian borders, they constitute a nationwide network of the most important highways; therefore for the convenience of the motorist there must be continuity an
45、d a uniform pattern of marking and numbering these routes without regard to State lines. In arriving at a route marking and numbering policy the following guides shall be used by the Association. 1. 2. 3. 4. 5. 6. 7. The Executive Committee shall determine and assign the numbers to be used in markin
46、g the routes of the Interstate System. No new divided numbers (such as I-35W and I-35E, etc.) shall be adopted. Ex- isting divided Interstate numbers shall be eliminated as rapidly as the State Highway Department and the Executive Committee can reach agreement with reference thereto. That there will
47、 be no Interstate route bearing the same number designation as a U.S. Numbered Route in any State. That sufficient room be left in assigning numbers to the routes of the Interstate System to allow for future expansion of the system and keep the numbering pat- tern in sequence. That no area has any v
48、ested right to any route number. That the routes be so marked as to give maximum continuity between major control points, and that dual Interstate numbering be held to a minimum consis- tent with proper travel duidance. The U.S. Route numbers may be used in conjunction with Interstate Route markers
49、where the U.S. Route leads into the Interstate Route, follows it for a reasonable distance, and then departs again from the Interstate Route. 8. That Interstate Highway patterns in urban areas be carefully numbered and marked for the safety and convenience of the traveling public, and to insure unifor- mity of practice that each State Highway Department is to submit its plan of numbering and marking of such urban areas to the executive committee for ap- proval prior to the erection of markers. 9. That a distinctive, easily recognized route marker-shape, color and sizes be adopted and uni
