Morrisville Unified Development Ordinance - April 2019

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

g. Analysis Scenarios The analysis shall have a timeframe adequate to address all phases of the proposed development. Intersections shall be analyzed using the four scenarios in Table 5.8.6.B.3.g: Analysis Scenario Requirements, and shall include queue analysis:

Table 5.8.6.B.3.g : Analysis Scenario Requirements

Type of Scenario [1]

Annual Growth [2]

Approved Developments

Proposed Development

Necessary Improvements

Existing

Existing No-Build

X X X X

X X X

X X X

Build

X X

Build Improved [3]

X

Notes: [1] For a phased proposed development analysis, the build and build improved conditions shall be assessed, and the traffic associated with each previous phase shall be included in the analysis of each successive phase of the proposed development. [2] The Annual Growth rate will be determined in the Memorandum of Understanding (see Section 5.8.6.B.3.c). [3] This scenario may be eliminated if improvements are not necessary to satisfy any queuing problems or the LOS criteria in Section 5.8.6.B.4.j(2), Recommendations. (Ord. No. 2016-001, 05/10/2016) h. Traffic Counts Traffic counts shall reflect normal and/or peak hour traffic conditions, as determined by the Planning Director.

(1) Traffic counts used for analysis shall be collected:

(A) Within the twelve months prior to the date of the TIA submittal;

(B)

On Tuesday, Wednesday, or Thursdays;

(C) On other peak periods such as noon or weekend periods, if required; and

(D) When school is in session. If not practicable, the Planning Director can approve the use of school traffic estimates.

(2) Traffic counts used for analysis should not be collected:

(A)

On holidays; and

(B)

When significant weather or traffic incidents occur.

Trip Generation Standards Trip generation data for each proposed development shall be based upon the ITE Trip Generation Manual, most recent edition, or another source of trip generation approved by the Planning Director. In addition to this requirement, the following standards shall apply:

i.

(1) Internal Capture

(A) The internal capture calculation shall utilize the percentages from the most recent edition of the ITE Trip Generation Manual to estimate the internal capture reduction percentage; (B) Rates higher than 15 percent require justification and may be approved on a case- by-case basis with Planning Director approval; (C) Reductions for internal capture should be applied to multi-use or mixed-use sites only;

(D) Internal capture shall not be taken for AM peak hours or from lodging land uses;

(E) Internal capture procedures shall not be used on a retail-only site; and

April 23, 2019

Morrisville, NC

Page 5-44

Unified Development Ordinance