1) Residential Access Street: Lowest order of residential streets. Provides frontage for access to lots, and carries traffic having destination or origin on the street itself; designed to carry the least amount of traffic at the lowest speed; all, or the maximum number of housing units, shall front on this class of street.
Guideline Maximum ADT |
250 (each loop) |
250 (total) |
2) Residential Subcollector Street: Middle order of residential streets. Provides frontage for access to lots, and carries traffic of adjoining residential access streets; designed to carry somewhat higher traffic volumes with traffic limited to motorists having origin or destination within the immediate neighborhood; is not intended to interconnect adjoining neighborhoods or subdivisions and should not carry regional through traffic.
Guideline Maximum ADT |
500 (each loop) |
1,000 (total) |
3) Residential Collector Street: Highest order of residential streets. Conducts and distributes traffic between lower order residential streets and higher order streets/arterials and expressways; carries the largest volume of traffic at high speeds; function is to promote free traffic flow; therefore, parking and direct access to homes from this level of street should be prohibited; collectors should be designed so that they cannot be used as shortcuts by non-neighborhood traffic.
Guideline Maximum ADT |
3,000 (total) |
4) Arterial Street: A higher order, interregional road in the street hierarchy. Conveys traffic between centers; should be excluded from residential areas.
Guideline Maximum ADT |
3,000+ |
5) Special Purpose Streets:
a) Rural Residential Lane: A street serving a very low density area (minimum 2 acre zoning); the maximum ADT level limits the number of single-family homes on this road to twenty (20).
Guideline Maximum ADT |
200 |
b) Cul-De-Sac Street: A street with a single means of ingress and egress and having a turnaround. Design of turnaround may vary; cul-de-sacs shall be classified and designed according to anticipated ADT level; a residential access cul-de-sac will have a maximum ADT level of two hundred fifty (250), and a subcollector cul-de-sac will have a maximum ADT level of five hundred (500).
Guideline Maximum ADT |
250 (residential access total) |
500 (subcollector) |
c) Marginal Access Street: A service street that runs parallel to a higher order street and provides access to five hundred (500) abutting properties and separation from through traffic; may be designed as residential access street or subcollector according to anticipated daily traffic.
Guideline Maximum ADT |
500 (residential access total) |
500 (subcollector) |
d) Divided Streets: Streets may be required to be divided in order to provide alternate emergency access, to protect environmental features, or to avoid grade changes. Design standards should be applied to the combined dimensions of the two (2) street segments as required by the street class.
Guideline Maximum ADT |
500 (residential access total) |
1,000 (subcollector total) |
3,000 (collector total) |
e) Stub Street: A portion of a street which has been approved in its entirety; permitted as part of phase development; may be required if part of an overall master plan.
Guideline Maximum ADT |
500 (residential access total) |
1,000 (subcollector total) |
3,000 (collector total) |
(Res. 91-096, 12-10-1991; amd. 2004 Code; Ord. 10-001, 1-12-2010)
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