Morrisville Unified Development Ordinance - June 2017

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

Table 5.8.6.B.3.j: Minimum Signal Cycle Lengths

Number of Phases

Minimum Recommended (seconds) [1]

2 3

60 90

4 or more [2]

120

Notes:

[1] All cycle lengths should be rounded to the nearest 5 seconds. [2] Traffic Signal Timing Manual (FHWA) for planning level analysis. (Ord. No. 2016-001, 05/10/2016)

Content of the Analysis

a. General Requirements

The analysis shall:

(1) Be sealed and dated by the Professional Engineer and include the information outlined in this subsection 4 as well as an executive summary; (2) Include a table of contents and clearly labeled maps, tables, and figures presented in a legible scale; and (3) Include a CD-ROM or DVD that contains all printed report files and electronic input/output files, including analysis files.

b. Site Location, Access, and Background Information

This section of the analysis shall include:

(1) A description of the existing land use(s), site, and analysis study area boundary;

(2) A vicinity map that includes the existing and approved uses/developments in the vicinity of the proposed development;

(3) A description of the uses in the proposed development;

(4) A site plan for the proposed development, if applicable;

(5) A figure showing the existing lane geometry of study intersections, including current approach and departure laneage at each intersection, distances between intersections, speed limits, traffic control, and length of the full width storage for exclusive turn lanes, lane additions, or lane merges; (6) A figure showing traffic accident counts as recorded by the NC Highway Patrol and other local law enforcement agencies, if available;

(7) Figure showing average annual daily traffic volume (AADT), if available;

(8) Bicycle and pedestrian infrastructure within ½ mile of the proposed development; and

(9) Public transportation facilities within one mile of the proposed development.

Existing Analysis

c.

This section of the analysis shall include:

(1) A figure showing existing AM and PM turning movement volumes; and

(2) A table showing existing level of service (LOS) results, which includes overall LOS indicated for signalized intersections and worst movement/approach for unsignalized intersections.

d. Future No-Build Analysis

This section of the analysis shall include:

June 23, 2017

Morrisville, NC

Page 5-46

Unified Development Ordinance