(a) In order to promote public safety and convenience, streets shall be planned to serve particular minimum design functions as set forth herein. The Municipal street system is herein structured in a hierarchy with the streets serving the highest function and the heaviest traffic volumes at the highest level and streets serving the lowest function and the lowest traffic volumes at the lowest level. All streets shall intersect with other streets of equal or higher order. Proposed streets shall be planned to carry traffic from the lower order streets, along streets of progressively higher order, to streets of the highest order. Streets shall be classified as to function throughout their entire length based upon the highest function and the highest average daily traffic (ADT) level which they serve. The classification of a street may change, over time, as new streets are connected to said street and/or as the traffic volume on said street increases. Through streets shall be deemed to be of higher order than dead end streets.
(1) STATE and FEDERAL HIGHWAYS: These streets shall be the first and highest order streets in the hierarchy. They shall be primarily for the movement of interurban traffic. See the applicable state and federal standards and regulations for requirements. Lots and building sites abutting State and Federal highways shall conform to the requirements of Section 901.36 (a) (Marginal access streets).
(2) ARTERIAL STREETS: Arterial streets shall be the second highest order streets in the hierarchy. They shall be primarily for the movement of fast, heavy traffic between centers of traffic generation. Arterial street shall be required where shown in the Municipal Thoroughfare Plan and where the estimated average daily traffic (ADT) volume will exceed the limits established for collector streets. Arterial streets, unless shown otherwise on the Thoroughfare Plan, shall be planned for continuation of existing streets in the system at the same width or greater width in accordance with adopted standards. Lots and building sites abutting arterial streets shall conform to the requirements of Section 901.36(a) (Marginal access streets) as applicable. Arterial streets shall be further subclassified as major arterials and minor arterials.
A. Major Arterial: These streets shall be the highest order arterial streets. They shall be subject to minor access control and shall contain as few intersections as possible; such intersections shall be channelized. These streets shall provide connection between state and federal highways to facilitate the movement of interurban traffic through the community.
B. Minor Arterials: These streets shall be the lowest order arterial streets. They shall function as the main feeder streets with signalization controls where needed, and stop signs on side streets. These streets may occasionally form the boundaries of neighborhoods.
(3) COLLECTOR STREETS. Collector streets shall be the third level of streets in the hierarchy. They shall be required where shown on the Thoroughfare Plan and shall also be required when the average daily traffic (ADT) anticipated on tile street will exceed the limits established for local streets. Collector streets shall be the main interior streets. These streets shall collect, and distribute, traffic between local streets and major streets. Access to abutting properties shall be subject to the restriction set forth in this section. Collector streets, unless shown otherwise on the thoroughfare plan, shall be planned for continuation of existing streets in the system at the same width or greater width in accordance with adopted standards. Collector streets will normally contain a relatively large number of intersections with local streets. Collector streets are herein required, without exception, to be through streets. Collectors are further subclassified as residential collectors and general collectors.
A. General Collector: These streets shall be the highest order collector streets. They may service residential and/or nonresidential areas. These collectors shall provide linkage between lower order and higher order streets in the hierarchy. Residential lots and building sites abutting general collector streets shall conform to the requirements of Section 901.36(a) (Marginal access streets). The fronting of, and access to, nonresidential lots on a general collector is not limited. However, the location and interval of access drives may be designated by the Approving Authority when necessary due to existing or anticipated traffic problems.
B. Residential Collectors: Residential collector streets shall be the lowest order collector street. They shall be limited to residential neighborhood traffic, but provide no, or limited, residential frontage. These collectors shall be laid out to discourage through traffic, from outside the development, unless linkage between streets outside of the development is determined by the Municipal Approving Authority to be desirable. Residential collectors may be designed based on their average daily traffic level (ADT). The total frontage of all lots fronting on a residential collector street shall be limited to a percentage of the total length of the proposed collector street as follows:
RESIDENTIAL COLLECTOR LOT FRONTAGE LIMITATIONS | ||||
ADT Level | 1000-1199 | 1200-1599 | 1600-1999 | 2000 or > |
Maximum percent of frontage | 20% | 10% | 5% | 0% |
(4) LOCAL STREETS. Local streets shall be the fourth and lowest order streets in the hierarchy. They shall provide for access to abutting properties and circulation of slow moving traffic. Local streets shall be planned for convenient circulation toward the principal directions of travel. The layout shall be related to the topography and natural features. It shall be formed of straight, moderately winding, curved, loop, angular or ell streets; "T" intersections shall generally predominate. When loop streets are utilized both ends of the street must intersect the same collecting street; and be laid out to discourage through traffic. Gridiron, and other rigid geometrical patterns shall be avoided. Local streets shall be further subclassified as general, residential subcollector, and residential access.
A. Local General: These streets shall be the highest order local streets. They shall be utilized to serve non-residential lots and building sites; and shall be used in residential development where the ADT levels will not be fixed or cannot be accurately determined. Local general streets may intersect with, or take access from, any other street.
B. Residential Subcollector: These streets shall be the intermediate order of local streets.They shall serve to move traffic from access streets to collector streets in residential areas only. Access to abutting lots shall not be limited. These streets may intersect with, or take access from, any other streets type. Residential subcollectors may be designed based on their expected average daily traffic (ADT) levels.
C. Residential Access: These streets shall be the lowest order local street. They shall serve only residential lots and building sites. They shall be designed so that no individual street conveys more traffic than that which originates on, or is destine to, the street itself. These streets may intersect, or take access from, any other street type. They shall be designed to create quiet neighborhood environments. Residential access streets may be designed based on their expected average daily traffic (ADT) levels.
(b) Local streets for business and industrial developments shall be planned to connect with arterial, general collector, or other local general streets so as to not generate large volumes of traffic on any residential street. Local street for multifamily buildings and. developments shall be planned to connect with arterial, general collector, or a residential collector or subcollector (subject to ADT limits), so as not to generate unnecessary traffic on residential access streets.
(Ord. 1327. Passed 5-9-91.)