HomeMy WebLinkAboutHARMONY TECHNOLOGY PARK SECOND - Filed GC-GENERAL CORRESPONDENCE - (2)CC) MEMORANDUM
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CO o TO: Les Kaplan, Imago Enterprises, Inc.
n City of Fort Collins0
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o FROM: Matt Delich
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DATE: August 9, 2004
XQ
Z SUBJECT: Harmony/Cambridge intersection signal analysis
File: 0469ME01)
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This memorandum addresses signal warrants at the Harmony/
N Cambridge -HP East intersection under a given level of development of
0) the Willowbrook and Chateau developments. It was assumed that
co approximately two-thirds of the Willowbrook development would be
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o built and occupied by/before the short range (2007) future. The
Q rn purpose of this analysis is to determine whether signal warrants
Z w would be met at the Harmony/Cambridge-HP East intersection. Figure 1
LLI
o shows recent peak hour traffic at the Harmony/HP West and Harmony/
0 Cambridge -HP East intersections. Raw traffic counts are provided in
0
Appendix A. Appendix B contains the peak hour warrant analysis sheet
N for a major street (Harmony Road) where the posted speed is greater
than 40 mph. From this exercise, it can be concluded that the peak
hour signal warrant would be met in the afternoon peak hour using the
current traffic volumes on the HP East leg of the intersection.
It is important to note that the "Harmony Corridor Plan" and
the "Harmony Road Access Control Plan" indicate that the Harmony/
Cambridge -HP East intersection is a potential signalized
intersection. This intersection is located approximately 0.5 miles
east of the Harmony/Ziegler signalized intersection. Therefore, it
meets the spacing criteria of both the City of Fort Collins and CDOT.
It is assumed that signal progression was conducted in the "Harmony
W Road Access Control Plan." Along with serving the Willowbrook and
Chateau residential developments, it will also provide a direct
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z access to the Fossil Ridge High School located in the northeast
w quadrant of the Ziegler/Kechter intersection. This school is
w scheduled to open in Fall 2004. In addition to these specific
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developments, the Fort Collins Master Street Plan shows Cambridge
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LIJ Drive directly connecting to Trilby Road through various developments
J to the south. This street is designated as a collector street.
W
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a Typically, traffic signals are not installed at any
ccintersection unless one or more signal warrants are met according to
a- the Manual on Uniform Traffic Control Devices (MUTCD). A warrant
z analysis involves obtaining traffic count information at a given
c intersection in accordance with procedures in the MUTCD. However,
the south leg (Cambridge Drive) terminates approximately 1700 feet
W south of the subject intersection. Therefore, the following analysis
relies on traffic forecasts. Specifically, this analysis utilizes
a peak hour traffic, since that is the most predictable. This exercise
C involved conducting trip generation, trip distribution, and trip
assignment for the Willowbrook and Chateau developments. Along withCQ
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the peak hour traffic from these developments, a portion of the left -
turning traffic out of the HP West Access would likely use the HP East
Access when the subject intersection is signalized. Figure 2 shows the
forecasted peak hour traffic at the Harmony/HP West and Harmony/Cambridge-
HP East intersections at a short range future year (approximately 2007).
Appendix C contains the peak hour warrant analysis sheet for a major street
Harmony Road) where the posted speed is greater than 40 mph. From this
exercise, it can be concluded that the peak hour signal warrant would be
met in both the morning and afternoon peak hours. It is likely that this
intersection would also meet the Four Hour Warrant criteria from MUTCD,
since the proposed uses generate significant traffic during the course of
the day, not just at the peak hours.
The peak hour signal warrant will be met when the minor street left
turns exceed 75 vehicles per hour. This warrant is met for the southbound
left turns exiting Hewlett-Packard in the afternoon peak hour. The various
developments that were included in these analyses do have connections to
Ziegler Road. The Harmony/Ziegler intersection is a signalized
intersection. However, as homes continue to be built and traffic related
to Fossil Ridge High School grows, delays at the Harmony/Ziegler
intersection will increase. It is difficult to say with certainty when the
Cambridge Drive leg of the subject intersection will meet warrants.
However, it is reasonable to assume that when Cambridge Drive is connected
to the developments to the south, the 75 vehicles per hour would be met on
the south leg at/before half of the approved developments are built and
occupied. The key element to meeting the signal warrant is connecting
Cambridge Drive to the developments to the south.
Do not hesitate to contact me if you have questions or desire
additional analyses.
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SHORT RANGE (2007) PEAK HOUR TRAFFIC Figure 2
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