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Transportation Plan - Town of Garner

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should be at a 90 degree angle. Angles less than 90 degrees should not<br />

be constructed unless justified by an engineering analysis and in no case<br />

shall be less than 60 degrees with the highway.<br />

Additional Design Criteria:<br />

• Offset Access Connections: On undivided roadway segments, access<br />

connections on opposing sides <strong>of</strong> the highway shall be <strong>of</strong>fset at an<br />

adequate distance to minimize overlapping left turns and other<br />

maneuvers that may result in safety hazards or operational problems.<br />

• Auxiliary Lanes: Auxiliary lanes (left or right turn lanes) shall be<br />

required for new driveways where they meet the North Carolina DOT<br />

or ITE warrants.<br />

• Out‐parcel Access: All access to an out‐parcel shall be internalized<br />

using the shared circulation system <strong>of</strong> the principle development.<br />

Access to out‐parcels shall be designed to avoid excessive movement<br />

across parking aisles and queuing across surrounding parking and<br />

driving aisles.<br />

Minimum On‐Site Vehicle Storage Area:<br />

Adequate storage must be provided within the internal circulation system<br />

for properties that include either a drop‐<strong>of</strong>f loop or drive‐through facility<br />

so that vehicles do not queue onto the highway system. Specific storage<br />

areas will be determined by the <strong>Garner</strong> Engineer in cooperation with the<br />

North Carolina DOT on a case‐by‐case basis during the development<br />

review process. However, the following minimum storage lengths are<br />

required for specific development types:<br />

(A) For single‐lane drive‐in banks, storage to accommodate a minimum<br />

queue <strong>of</strong> six vehicles will be provided. Banks having several drive‐in<br />

service windows will have storage to accommodate a minimum <strong>of</strong><br />

four vehicles per service lane.<br />

(B) For single‐lane drive‐through full service car washes, storage to<br />

accommodate a minimum <strong>of</strong> twelve vehicles will be provided.<br />

Automatic or self service car washes having a multi‐bay design will<br />

have a minimum vehicle storage length <strong>of</strong> three vehicles per bay.<br />

(C) For fast‐food restaurants with drive‐in window service, storage<br />

within the site to accommodate a minimum <strong>of</strong> eight vehicles per<br />

service lane from the menu board/ ordering station will be provided.<br />

(D) For service stations where the pump islands are parallel to the<br />

pavement edge, a minimum setback <strong>of</strong> 35 feet between the pump<br />

islands and the public right‐<strong>of</strong>‐way will be provided. For service<br />

stations where the pump islands are not parallel to the pavement<br />

Appendix D: Access Management Guidelines Page | 170<br />

December 10, 2009

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