Morrisville Unified Development Ordinance - April 2019

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

(6) Nontraditional peak hour studies, if required;

(7) Whether or not truck or heavy vehicle distributions need to be considered separately;

(8) Approved development applications within the study area;

(9) Funded capital improvement projects (Town, State, and federal) that will increase the capacity of the facilities in question;

(10) Site construction phasing;

(11) If a signal warrant analysis for high volume unsignalized intersections is needed;

(12) The parameters of the Memorandum of Understanding (MOU); and

(13) Any questions, issues, or assumptions that must be taken into account or addressed.

c. Memorandum of Understanding The Town will prepare a Memorandum of Understanding (MOU) that outlines the agreements made during the scoping meeting. The applicant shall return the signed MOU to the Planning Director. The Professional Engineer cannot begin work on the analysis until both the Town and the applicant have signed the MOU. The analysis shall examine future traffic conditions one year after the proposed development is scheduled to be completed (build +1). e. Analysis Software The study shall be performed using the operational analysis of the latest Highway Capacity Manual and the preferred software listed in the Table 5.8.6.B.3.e, Preferred Software. Other software packages such as Synchro are preferred for coordinated signal systems and may be required for supplemental analysis. d. Analysis Period

Table 5.8.6.B.3.e: Preferred Software [1]

Items for Analysis

Software [2]

Multiple Intersections

Synchro Synchro

Isolated Signalized Intersections Isolated Unsignalized Intersections

Synchro, HCS

Simulation

SimTraffic, VISSIM, CORSIM

Roundabouts

SIDRA, VISSIM

Roadway Segment

HCS HCS

Merge, Diverge, and Weave

Notes: [1] Use of alternate analysis software must be approved by the Town of Morrisville; however, the above software is not specifically endorsed by the Town of Morrisville. [2] Version of software currently in use by NCDOT (Ord. No. 2016-001, 05/10/2016)

Analysis Study Area Boundary

f.

(1) The analysis study area shall at a minimum include any roadways and intersections within one-half mile of the proposed development.

(2) The analysis study area may be modified if the Planning Director:

(A) Determines a larger study area or additional roadways or intersections for analysis are required due to the size or characteristics of the proposed development; or (B) Waives the need to study roadways or intersections that are determined not to be significantly affected by the proposed development, as long as all key intersections within the study area are studied.

Morrisville, NC

April 23, 2019

Unified Development Ordinance

Page 5-43