(A) Turn lanes will be required for ingress and egress into a proposed site when the proposed turns and anticipated background adjacent street traffic indicate their necessity. The North Carolina Department of Transportation publishes a chart in the NCDOT Driveway Manual that recommends storage lengths for left and right turn lanes, based on the number of turns versus the opposing volume of traffic.
(1) This chart should be used as a basis for determining the storage length required for turn lanes into a site. The chart (Figure 2) is included in Appendix C.
(2) Figure 2 depicts the deceleration and storage lengths for right and left turn lanes. Deceleration lengths are a function of design speed and recommended deceleration lengths will be determined based on coordination between NCDOT and the village.
(B) These guidelines shall be used to determine when a turn lane is appropriate.
(1) The Figure 2 chart is intended for use with unsignalized, two-lane roadways.
(2) For multi-lane roadways, the average through volume per lane should be multiplied by 1.05 and used as the through volumes on the chart to determine whether a turn lane is warranted at the location.
(3) Turn lane requirements for signalized locations shall be determined by a traffic impact analysis or other engineering study with approval from the village and NCDOT.
(4) In the event of a planned or ongoing roadway project in the proximity of a development, the village may delay the required construction of any auxiliary turn lane(s) a maximum of six months to assure design continuity with the planned project, or accept a fee in lieu of construction to incorporate the turn lane(s) into the road project.
(C) Applying these street classifications, the number and location of permissible driveways shall be regulated as shown on Table 1:
Street classification | Thoroughfare | Collector | Local |
Street classification | Thoroughfare | Collector | Local |
Driveway type required
| Street-type only | Street-type unless design speed <40 and peak hour trips <100 | Apron or street-type permitted |
Number of driveways permitted
| 1 | 1 | 1 |
Corner clearance from a public street
| 100' or 25' from intersection radius, whichever is greater | 75' or 25' from intersection radius, whichever is greater | 50' or 25' from intersection radius, whichever is greater |
Separation between adjacent existing or proposed driveways onsite
| 100' | 75' | 50' |
Separation from adjacent property line
| 50' | 38' | 25' |
Minimum/maximum allowable
width
| 25'–36' | One-way: 14'–25' Two-way: 25'–36' | 10'–24' |
Minimum/maximum allowable
radii
| Minimum: 25' Maximum: 45' | Minimum: 20' Maximum: 45' | Minimum: 15' Maximum: 45' |
(D) Regardless of available frontage, the approval of multiple driveways and driveway types is subject to site plan review by the village. One driveway is typically permitted. Class D (Special Corridors) will be handled on a case-by-case basis. Higher street classification governs for corner parcels.
(1) One driveway shall be permitted for ingress-and-egress purposes to a single property or development, provided that the property has been created as a separate tract in conformance with the Village Unified Development Ordinances or was in existence prior to the adoption of this subchapter. Two one-way driveways have the same consideration as one two-way driveway, provided that site design and circulation clearly defines and promotes a one-way pattern, and that appropriate signing and pavement markings are used to reinforce the intended traffic pattern.
(2) The village shall offer more than one driveway as an incentive for development that provides lot consolidation and/or the lot frontages shown below in the incentive chart (Table 2). Additionally, the developer shall use the following general considerations in developing a new non-residential site:
(a) Should be designed with future connections in mind;
(b) Stub to all adjoining commercially zoned parcels is encouraged;
(c) Parking and circulation should be configured to accommodate adjacent connectivity;
(d) Adequate internal stacking should be required to avoid spillback onto the public right-of-way.
(3) In such instances where the developer provides parcel consolidation or frontages as noted in the incentive table, the Public Works Director shall use the general consideration listed above when reviewing the site. The Public Works Director and/or designee, in conjunction with NCDOT, shall review all considerations for more than one driveway location. However, if a preexisting safety condition is documented, then the incentive table will be used, at the discretion of both the village and NCDOT, and additional driveways may not be granted.
(E) When reviewing the site, both the village and NCDOT shall use the following table to determine when additional driveway locations shall be granted. Table 2 is intended for use when one or more existing lots are combined.
Street Classification | Thoroughfare | Collector | Local |
Number of driveways based on available lot frontage when providing at least one parcel/lot consolidation
| <300': 1 300'-500': 2 >500': 3 | <200': 1 200'-400': 2 >400': 3 | <150': 1 150'-350': 2 >350': 3 |
(Ord. 2012-02, passed 2-27-12)