Only where site conditions make it impossible to extend streets to the boundary of the allotment shall cul-de-sac streets be approved subject to the recommendation of the Planning Commission and the approval of Council. All such cul-de-sac streets shall terminate at an offset turning circle with dimensions based on the appropriate design vehicle as shown in the table below.
DESIGN VEHICLE TYPE | OUTSIDE RADIUS | |
Minimum (ft.) | Maximum (ft.) | |
P, Passenger Vehicle |
30 |
35 |
SU, Single Unit Truck |
47 |
52 |
WB-40, Semi-Trailer Combo |
42 |
47 |
WB-50, Semi-Trailer Combo |
47 |
52 |
The design vehicles identified are the same as those defined in a Policy of Geometric Design of Highways and Streets published by the American Association of State Highway and Transportation Officials (“AASHTO”). In all other instances streets shall be carried to the boundaries of the allotment. A cul-de-sac shall be permitted within an allotment when at least one (1) street will continue to the adjoining property or when there is dual access to existing dedicated roads from and to the allotment.