Morrisville Unified Development Ordinance - April 2019

Article 5: Development Standards Section 5.8. Access and Circulation 5.8.6. Vehicular Access and Circulation

Thresholds for a Transportation Impact Analysis

a. General Thresholds

(1) A TIA is required if one or more of the following thresholds are met.

(A) The proposed development is expected to generate 100 or more vehicle trips over any one-hour period or 1,000 or more trips per day based on the most recent edition of the Institute of Transportation Engineers (ITE) Trip Generation Manual; (B) There are existing issues with complex roadway geometry or intersection features (e.g. design and/or capacity) within the study area; or (C) There are significant potential changes to adjacent development traffic patterns as a result of the proposed development. (2) A reduced set of analysis requirements, as determined by the Planning Director, may be required if one or more of the following thresholds are met. (A) A proposed amendment to the Comprehensive Plan, Town Center Plan, and/or other small area plan would redesignate the development site to a more intensive trip generation land use classification (e.g., Low Density Residential to Medium Density Residential); (C) A rezoning application proposes reclassification of the development site to a more intensive trip generation zoning district (e.g., Low Density Residential District to Medium Density Residential District) that is not consistent with the adopted Comprehensive Plan; (D) The proposed development does not meet any of the thresholds in subsection (1) above, but is located on a roadway that has an existing capacity issue; or (B) An amendment to the Transportation Plan is proposed;

(E) A proposed revision to an approved, built out, or partially built out development:

(i) Has an existing TIA that is less than two years old, as determined by comparing the submittal date on the TIA report and the submittal date of the proposed amendment;

(ii) Requires a change in access, intensity, or type of development; or

(iii) Is impacted by any major changes to the roadway system, such as but not limited to, road closures and new thoroughfares.

General Requirements

a. Preparer Qualifications

The analysis shall be prepared by a Professional Engineer licensed by the State of North Carolina and having expertise in traffic engineering.

b. Scoping Meeting

Prior to submitting any analysis, the Professional Engineer preparing the analysis shall meet with the Planning Director to determine the following:

(1) Study area boundary (See Section 5.8.6.B.3.f, Analysis Study Area Boundary);

(2) Trip generation assumptions;

(3) Growth Rate for future year traffic estimation;

(4) Trip distribution;

(5) Pass-by traffic and/or internal capture;

April 23, 2019

Morrisville, NC

Page 5-42

Unified Development Ordinance