Article 5: Development Standards
Section 5.8. Access and Circulation
5.8.6. Vehicular Access and Circulation
June 23, 2017
Morrisville, NC
Page 5-46
Unified Development Ordinance
Table 5.8.6.B.3.j: Minimum Signal Cycle Lengths
Number of Phases
Minimum Recommended (seconds) [1]
2
60
3
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 subsectio
n 4as 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.
c.
Existing Analysis
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: