The following road classifications shall be utilized for all new development in the Town of Van Buren. The arrangement, character, extent, width, grade and location of all roads shall conform to the Town's Comprehensive Plan, if any, and shall be considered in relation to existing and planned roads, topographic conditions, public convenience and safety and to proposed land uses to be served by such roads. The Planning Board shall have final approval of all proposed Town road classifications.
A. 
Arterials. Arterials are designed for the efficient movement of through traffic at speeds which are as high as can be safely and reasonably allowed. Access to abutting properties is generally restricted with provisions at major traffic generators such as commercial or high-density housing provided.
B. 
Collectors. While providing access to abutting properties, collectors also enable moderate quantities of traffic to move expeditiously between local streets and the arterial road network.
C. 
Local streets and cull-de-sac. Local streets provide access to immediately adjacent properties. Through movements are generally discouraged by operational controls, such as controlled intersections, geometric restrictions, signs, etc.
A. 
The typical sections and details shown in Figure 1[1] shall be utilized for all new road construction, unless approved by the Town Planning Board.
B. 
Typical sections and details for proposed arterials shall be submitted to the Planning Board for review and approval.
C. 
In addition to these requirements, design guidelines for each road classification as set forth by the American Association of State Highway Officials (AASHTO) and the New York State Department of Transportation (NYSDOT) shall apply to all new road construction, unless approved by the Planning Board.
D. 
Roads that are approved to have one end permanently closed shall have at the closed end a cul-de-sac that complies with these design standards. Roads that are approved to have one end temporarily closed (such as for phased construction) shall have at the closed end a turnaround in the form of a cul-de-sac or other means to be approved by the Town,
E. 
The following minimum design standards shall be utilized for all new Town road construction in the Town of Van Buren. Arterials shall generally meet state and/or county design standards, as appropriate (see § 170-8B).
Rural Collectors
Residential Collectors
Local Streets
Minimum right-of-way width (feet)
80
60
60
Minimum radius of horizontal curves (feet)
1,000
500
150
Minimum tangent between reverse curves (feet)
300
100
100
Minimum grade
0.5%
0.5%
0.5%
Maximum grade
5%
7%
7%
Minimum stopping sight distance (feet)
400
250
200
Maximum grade within 100 feet of intersections
2%
2%
3%
Minimum intersection curb radius (feet)
30
30
25
A. 
Drainage system design for all new roads in the Town shall be in accordance with these specifications. All proposed drainage designs shall be reviewed and approved, in writing, by the Town Highway Superintendent and/or Town Engineer.
B. 
A drainage report shall be submitted providing sufficient information and details for the Town to evaluate all proposed drainage systems, and impacts to existing drainage patterns and drainage facilities. The drainage report shall be signed and sealed by a professional engineer, licensed in the State of New York, and shall be submitted with the project plans. The report shall include calculations for runoff; pipe and culvert sizing, catch basin spacing and types, ditch sizing, methods used for calculations, provisions for erosion control, and other appropriate data.
(1) 
Design frequencies.
(a) 
The following design storm frequencies shall be used in the analysis of storm drainage flows for roadway drainage systems:
System
Storm Frequency
Cross culverts
Fifty-year
Storm sewer system
Five-year
Gutters
Five-year
Roadway ditches
Ten-year
(b) 
In some cases, as required by the Town Engineer, an analysis of the one hundred-year storm event may be required for protection against property damage or loss of life.
(2) 
Cross-culverts. All cross-culverts shall be designed to discharge a fifty-year peak flow utilizing available head at the entrance. Available head is that flood stage elevation which will not cause travel lane flooding or endangerment to life or personal property. Culvert design shall include an analysis of the inlet/outlet control conditions. Culvert design shall also include provisions for slope stability for the road embankment section, as well as the selection of appropriate inlet and outlet end-section treatment and erosion protection.
(3) 
Storm sewers.
(a) 
Storm sewer pipe shall be sized for peak flows resulting from a five-year storm without surcharging. The minimum pipe diameter for storm sewers shall be 12 inches. All pipes shall be designed for a three-foot-section minimum velocity, and an eight-foot-section maximum velocity when flowing full.
(b) 
All pipe shall be placed with a minimum of one foot of cover, as measured from the bottom of the subbase to the top of the pipe. When pipes of different diameters enter a catch basin or other structure on a through alignment, pipe crown elevations shall be matched.
(c) 
Catch basins shall be located outside of the travel lanes and spaced at a maximum of 400 feet.
(4) 
Roadway ditches, All ditches shall be designed to safely carry a ten-year peak flow. Based on the velocity at peak flow conditions, appropriate lining of the invert and side slopes shall be provided to control erosion. When ditches discharge into existing waterways, appropriate measures shall be taken to prevent erosion at the point of discharge.
(5) 
Gutters. All gutters shall be designed to safely carry a five-year storm event flow. The "puddle width" (spread) shall not encroach beyond 1/2 of the near travel lane. Where the spread calculations show that the spread exceeds this limitation, additional drainage structures will be required.