HomeMy WebLinkAboutNORTH LEMAY PLAZA PUD - PRELIMINARY - 57-87 - REPORTS - TRAFFIC STUDYADDENDUM
REVISED PRELIMINARY
TRAFFIC REPORT
FOR
LEMAYgPLAZA P.U.D.
/0 �� v
OCTOBER 26, 1987
0
Prepared by: Parsons & Associates
432 Link Lane Plaza
Port Collins, Colorado 80524
(303) 221-2400
PROJECT NO. 87.18'PDQ
ADDENDUM
REVISED PRELIMINARY TRAFFIC REPORT
LEMAY PLAZA P.U.D.
This addendum is a more detailed analysis of the Conifer and
Lemay intersection: performing a capacity and level of service
analysis assuming the intersection has been signalized (for 20-
year future traffic), and examining the curb cut on Conifer :to see
if the distance from Lemay is adequate to minimize conflict with
those attempting to turn into the site. The Highway Capacity
Manual was used to perform the analysis.
ASSUMPTIONS
The twenty-year analysis is based on a percentage increase in.
the A.D.T. (from the City of Fort Collins Transportation
Division). These figures are:
Lemay - 11,000 ADT an increase of 33%
Conifer - 6,000 ADT an increase of 300%
These percentages were applied to the peak hour traffic
volumes in order to perform the analysis.
The traffic signal cycle time, for the purpose of this
preliminary analysis, is assumed to be 7.5 seconds. Also the
signal is assumed to be 3-phase and pre -timed. The phase times
are further estimated to be:
1. Conifer, left and right = 20 seconds
2. Lemay, northbound left and through = 10 seconds
3. Lemay, north and southbound through = 4.5 seconds
These phase timings were calculated using the method found in
Appendix II.
CONCLUSIONS:
Using these assumptions, the level -of -service for the
intersection is B. The intersection operates at a level under
capacity.
Based on Figure I.9-1, the left -turn bay storage in feet for.
-the 20-year future volume on Conifer is 90 feet. The distance of
the curb cut to Lemay (center line from drive to west edge of
Lemay) is 130 feet.