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1985 HCM: UNSIGNALIZED INTERSECTIONS Page=1
###X##YXX##X###XX##X####X####X##XX##XX###X##XXX#YX#####X########YX###
IDENTIFYING INFORMATION -
--------------------------------------------------------
AVERAGE RUNNING SPEED, MAJOR STREET.. 45
PEAK HOUR FACTOR ..................... 1
AREA POPULATION ...................... 150000
NAME OF THE EAST/WEST STREET......... 38E
NAME OF THE NORTH/SOUTH STREET....... RED FOX
NAME OF THE ANALYST .................. MD
DATE OF THE ANALYSIS (mm/dd/yy)...... 09-24-1993
TIME PERIOD ANALYZED ................. 2010 PM PK HR
OTHER INFORMATION....
INTERSECTION TYPE AND CONTROL
------- -------------------------------------------------------------
INTERSECTION TYPE: T-INTERSECTION
MAJOR STREET DIRECTION: EAST/WEST
CONTROL TYPE NORTHBOUND: STOP SIGN
TRAFFIC VOLUMES
--------------------------------------------------------------------_
EB WB NS SB
---- ---- ---- ---- .
LEFT 0 53 3 --
THRU 122 248 0 --
RIGHT 6 0 25 -- -
NUMBER OF LANES
--------------------------------------------------------------------.
EB WB NB SB
------- ------- ------- -------
LANES 1 2 1 --
CAPACITY AND LEVEL -OF -SERVICE' Page-3
-------------------------------------------------------------------
POTEN- ACTUAL
FLOW- TIAL MOVEMENT SHARED RESERVE
RATE CAPACITY CAPACITY CAPACITY CAPACITY
MOVEMENT v(pcph) c (Pcph) c (pcph) c (Pcph) c = c - v LOS-
p M SH . R SH
MINOR STREET
NB LEFT 3 448 432 > 432 -> 428 ) A
> 774 > 743 >A
RIGHT 28 855 855 .> 855 > 828 > A
MAJOR STREET -
WB LEFT 58 978 978 978 919 A
IDENTIFYING INFORMATION
NAME OF THE EAST/WEST STREET...... 38E
NAME OF THE NORTH/SOUTH STREET.... RED FOX --
DATE AND TIME OF THE ANALYSIS..... 09-24-1993 : 2010 PM PK HR
OTHER INFORMATION....
i` 7 ) 7 7 l l
1985 HCM= UNSIGNALIZED INTERSECTIONS Page-1
IDENTIFYING INFORMATION
------------------------ --------------------------------------------
AVERAGE RUNNING SPEED, MAJOR STREET.. 45
PEAK HOUR FACTOR ..................... 1.
AREA POPULATION ....................... 150000 -
NAME OF THE EAST/WEST STREET......... 38E
NAME OF THE NORTH/SOUTH STREET....... RED FOX
NAME OF THE ANALYST .................. MD
DATE OF THE ANALYSIS (mm/dd/yy)...... 09-24-1993
TIME PERIOD ANALYZED ................. 2010 AM PK HR
OTHER INFORMATION.... .
INTERSECTION TYPE AND CONTROL
---------------------------------------------------------------------
INTERSECTION TYPE: T-INTERSECTION
MAJOR STREET DIRECTION: EAST/WEST
CONTROL TYPE NORTHBOUND: STOP SIGN
TRAFFIC VOLUMES
---------------------------------------------------------------------
EB WB NB SB
---- ---- ---- ----
LEFT 0 15 5 --
THRU 297 95 0 --
RIGHT 2 0 42 --
NUMBER OF LANES -
---------------------------------------------------------------------
EB WB NB SB
----------------------------
LANES 1 - 2 1 --
CAPACITY AND LEVEL -OF -SERVICE Page-3
---- ----------------------------------------------------------------
POTEN- ACTUAL
FLOW- TIAL MOVEMENT SHARED RESERVE
RATE CAPACITY CAPACITY CAPACITY CAPACITY
MOVEMENT v(pcph) c p M SH R SH (pcph) c (pcph) c (pcph) c = c - v LOS
MINOR STREET .
NB LEFT 6 459 453 > 453 > 448 > A
> 659 > 607 >A
RIGHT 46 697 697 > 697 > 651 > A
MAJOR STREET
WB LEFT 17 831 831 831 814 A
IDENTIFYING INFORMATION
-------------------------------------------------------------
NAME OF THE EAST/WEST STREET ...... •38E
NAME OF THE NORTH/SOUTH STREET.... RED FOX
DATE AND TIME OF THE ANALYSIS..... 09-24-1993 : 2010 AM PK HR
OTHER INFORMATION....
1985 HCM: UNSIGNALIZED INTERSECTIONS Page-1
xxxxxxx*xz:xzxxxxxxxssxxxxxxxxx:s:xxxxxxxxxx:xxzxxxx:xsxxxxxxxxxxxxxx
IDENTIFYING INFORMATION
_____________________________________________________________________
AVERAGE RUNNING SPEED, MAJOR STREET.. 45
PEAK HOUR FACTOR ..................... 1
AREA POPULATION ...................... 150000
NAME OF THE EAST/WEST STREET......... 38E
NAME OF THE NORTH/SOUTH STREET....... RED FOX
NAME OF THE ANALYST .................. MD ;
DATE OF THE ANALYSIS (mm/dd/YY)...... 09-24-1993
TIME PERIOD ANALYZED ................. 1995 PM PK HR
OTHER INFORMATION....
INTERSECTION TYPE AND CONTROL
---------------------------------------------------------------------
INTERSECTION TYPE: T-INTERSECTION
MAJOR STREET DIRECTION: EAST/WEST
CONTROL TYPE NORTHBOUND: STOP SIGN
TRAFFIC VOLUMES
_____________________________________________________________________
EB WB NB SB
---- ---- ---- ----
LEFT 0 53 3 --
THRU 87 177 0 --
RIGHT 6 0 25 --
NUMBER OF LANES
____________________________________________________________________-
ES WB NB SB
_______ _______ _______ -------
LANES 1 2 1 --
�3
CAPACITY AND LEVEL -OF -SERVICE Page-3
_____________________________________________________________________
POTEN- ACTUAL
FLOW- TIAL MOVEMENT SHARED RESERVE
RATE CAPACITY CAPACITY CAPACITY CAPACITY
MOVEMENT v(pcph) c p M SH R SH (Pcph) c (pcph) c (Pcph) c = c - V LOS
MINOR STREET
NS LEFT _3 525- 506 > 506 > 503 > A
> 823 ) 793 )A
RIGHT 28 890 890 > 890 ) 863 > A
MAJOR STREET
WS LEFT 58 997 997 997 939 A
IDENTIFYING INFORMATION
NAME OF THE EAST/WEST STREET...... 38E
NAME OF THE NORTH/SOUTH STREET.... RED FOX
DATE AND TIME OF THE ANALYSIS..... 09-24-1993 c 1995 PM PK HR
OTHER INFORMATION....
1985 HCM: UNSIGNALIZED INTERSECTIONS Pagel1
IDENTIFYING INFORMATION
______________________________________________________
AVERAGE RUNNING SPEED, MAJOR STREET.. 45
PEAK HOUR FACTOR ..................... 1
AREA POPULATION....................... 150000
NAME OF THE EAST/WEST STREET......... 38E
NAME OF THE NORTH/SOUTH STREET....... RED FOX
NAME OF THE ANALYST .................. MD
DATE OF THE ANALYSIS (mm/dd/YY)...... 09-24-1993
TIME PERIOD ANALYZED ................. 1995 AM PEAK HOUR
OTHER INFORMATION....
INTERSECTION TYPE AND CONTROL
---------------------------------------------------------------------
INTERSECTION TYPE: T-INTERSECTION
MAJOR STREET DIRECTION: EAST/WEST
CONTROL TYPE NORTHBOUND: STOP SIGN
TRAFFIC VOLUMES
____________________________________________________________________.
ES WB NB 58
--- ---- ---- ----
LEFT 0 15 5 --
THRU 212 68 0 --
RIGHT 2 0 42 --
NUMBER OF LANES
____________________________________________________________________.
ES WB NB SB
_____________________ -------
LANES 1 2 1 --
CAPACITY AND LEVEL -OF -SERVICE Page-3
------------------------------------- --------------------------------
POTEN- ACTUAL
FLOW- TIAL MOVEMENT SHARED RESERVE
RATE CAPACITY CAPACITY CAPACITY CAPACITY
MOVEMENT v(pcph) C (Poph) C (Poph) c (Poph) C = C - v LOS
p M SH R SH
_______ ________ _____________________ ____________ --
MINOR STREET
NB LEFT 6 543 537 > 537 > 532 > A
> 735 > 684 >A
RIGHT 46 769 769 > 769 > 723 > A
MAJOR STREET
WB LEFT 17 914 914 914 898 A
IDENTIFYING INFORMATION
NAME OF THE EAST/WEST STREET...... 38E
NAME OF THE NORTH/SOUTH STREET.... RED FOX
DATE AND TIME OF THE ANALYSIS..... 09-24-1993 t 1995 AM PEAK HOUR
OTHER INFORMATION....
A P P EN Q I X
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site generated traffic and the planned signalization of this
intersection.
7
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required to stop and wait for an acceptable gap in the eastbound
traffic.
V. RECOMMENDATIONS/CONCLUSIONS
Based on the findings of these technical analyses, recommen-
dations for required roadway improvements can be identified. These
recommendations account for development within Wildflower Ridge and
Fox Hills. The following is a brief summary of the above findings
and a general description of the recommended improvements for the
analyzed elements of the roadway network serving Wildflower Ridge
and Fox Hills.
- In the short range future (1995) with.full develQmment of
Wildflower Ridge and Fox Hills, westbound left -turn lane is
required on CR 38E at the Red Fox Road n on No other
auxiliary lanes
All traffic movements are expected to operated at level of
service A under both short and long term conditions. This will
/ provide excellent operating conditions.
No specific improvements are appropriate on Red Fox Road
given the distribution of residential traffic to a number of access
points.
- Site traffic is not anticipated to noticeably impact the
CR 38E/Taft Hill Road intersection given the moderate volume of
7.1
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3
Table 2
Short and Long Term Peak Hour Operations
Intersection
CR 38E/Red Fox (stop sign)
NB LT
NB RT
WB LT
Levels of Service
1995 2010
AM PM AM PM
A A A A
A A A A
A A A A
C.R. 38E
-do— 0/95
/,-15/15
0/297-6--
) r
2/2---,,
4,
C14
�z 14-
Lo
C14
lq-
x
0
U.
cri
4�
N
LEGEND:
SITE TRAFFIC / TOTAL TRAFFIC
AM PEAK HOUR
C.R. 38E
0/122-1--
6/6
x
0
W
im
ul
m
--*- 0/248
/--53/53
LEGEND:
SITE TRAFFIC TOTAL TRAFFIC
PM PEAK HOUR
2010 PEAK HOUR TRAFFIC Figure 5
I
Long range (2010) peak -hour traffic volumes were also
investigated. These volumes were developed using the same
- procedure by which the 1995 volumes were developed. Long range
site and background peak hour volumes are shown on Figure 5.
i:.
j IV. TRAFFIC IMPACTS
l'
Using the traffic volumes shown on Figures 4 and 5, the CR
38E/Red Fox Road intersection operates acceptably during the peak
1-
hours. These results are shown in Table 2. Calculation forms are
provided in the Appendix.. Auxiliary lanes at the CR 38E/Red Fox
Road intersection were evaluated using criteria in the Larimer
County Access Policy. Average peak hour traffic volumes were
determined by summing the morning and afternoon volumes and
L
dividing by two. Based upon these criteria, a westbound left -turn
lane is required on CR 38E at the Red Fox Road intersection. With
a posted 45 mph speed limit, this lane should be 400 feet (deceler-
r
S
ation and storage) and a bay taper at 15:1. In order to provide
a smooth redirection from one lane to a two lane cross section and
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back to one lane, a 40:1 transition should be used. An eastbound
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g; right -turn deceleration lane is not required. Although the right -
turn exits from Red Fox Road indicate the need for an acceleration
�.1 lane according to the access policy, this acceleration lane is not
Fillrecommended. This recommendation is made in consideration of the
driveways and intersecting streets to the east on both sides of CR
38E. A safer environment will be created if exiting vehicles are
5
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I
C.R. 38E
-.0-- 0--/68
15/15
0/212 --m-
) r
2/2
�r
N
d'
x
O
LL
c
LU
Q
M
LEGEND:
SITE TRAFFIC / TOTAL TRAFFIC
AM PEAK HOUR
C.R. 38E
-•— 0/177
53/53
N
0/87 �/
6/6 --4 Lo
M 4
to
N
x
O
LL
W
Er LEGEND:
SITE TRAFFIC / TOTAL TRAFFIC
PM PEAK HOUR
1995 PEAK HOUR TRAFFIC Figure 4
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C. Assumed Roadway System
r The primary road in this area is CR 3BE. This study.evaluates
the cross section of CR 38E and the need for auxiliary lanes at the
j;
j•; CR 38E/Red Fox Road intersection.
VD. Trip Distribution
i
,. Trip distribution was derived using the existing relationship
of the turning movements at the CR 38E/Highland West intersection.
The distribution from Wildflower Ridge and Fox Hills was assumed
F, to be similar to the existing distribution (East - 90%, West -
E. Traffic Assignments and Volumes
Utilizing the trip generation estimates and the distribution
j
I
assumptions identified previously, projected vehicle trips were
j assigned to the street system. Figure 4 shows the short range
(1995) peak hour traffic assignment for the site generated traffic
and the background traffic with a single point of access (Red Fox
Road) to CR 38E. Red Fox Road will be fed by a system of local
streets, each serving an estimated 5 - 15 dwelling units. Accord-
ingly, each local street intersection with Red Fox Road will
accommodate minimal traffic volumes. Once on CR 38E, most of the
1 site traffic will turn onto Taft Hill Road.
E!,
Ed
4
Table 1
Trip Generation
Daily
Land Use Trips
Wildflower Ridge and
Fox Hills - 87 S. F.
Detached D.U. 830
A.M. Peak
Trips Trips
In Out
17 47
P.M. Peak
Trips Trips
In Out
59 28
A. Development Assumptions
A short range future (1995) access scenario was analyzed.
r The short range future included the existing traffic factored by
a 2-3 percent per year growth factor, plus the proposed development
r traffic. It was assumed that Wildflower Ridge and Fox Hills would
be fully built out by 1995. This assumption is subject to market
demands for this type of residential use. The increase in
background traffic in this area is largely due to other development
in the area, primarily to the west.
B. Site Trip Generation
i
To estimate the traffic generated by the proposed development,
standard trip generation rates compiled by the Institute of
Transportation Engineers in their report entitled Trip Generation,
i
Fifth Edition were utilized for single family detached residential
4:
land uses. These rates were applied to determine daily, AM, and
t_
PM peak hour traffic volumes expected to be generated by the site.
Table 1 shows that Wildflower Ridge and Fox Hills would generate
approximately 830 trips per day with 64 and"87 trips occurring
during the AM and PM peak hour periods, respectively.
I
3
3
E
H
N
w
o r7
CZ) co
L, �
4/0
202/83
69
AM / PM
1993 PEAK HOUR TRAFFIC Figure 3
lane road with a rural cross section. It extends from Taft Hill
E, Road to the west. Taft Hill Road (CR 19) is a north/south arterial
E.:
in Fort Collins and a major travel route between Loveland and Fort
Collins. It is a two lane paved roadway. CR 38E has a posted
speed limit of 45 miles per hour. CR 38E is under stop sign
control at Taft Hill Road at the current time. However, the
-- intersection will be under traffic signal control in the fourth
quarter of 1993.
s
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B. Existing Traffic Conditions
Peak hour counts were conducted at the CR 38E and Highland
West intersection, just east of the proposed site. These counts
revealed 250-270 vehicles using CR 38E during peak hour periods.
The average daily traffic on CR 38E in 1991 was 3,900 vehicles.
i
Peak hour counts are shown on Figure 3.
d. .
t
C. Surrounding Land Uses
^! The residential development is proposed to be built on land
e_
that is in agricultural use. Land west and south of Wildflower
t:
Ridge and Fox Hills is also in agricultural use. Taft Canyon
4, residential development is east of the site.
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W. 'OUN r 386 _ly ROAD -
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X HILLS P.U.D.
A&
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NO SCALE
TAFT
CANYON
WESSEX DRIVE '
SITE PLAN
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Figure 2
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NO SCALE
SITE LOCATION
Figure I
E- -
I. INTRODUCTION
? Wildflower Ridge Subdivision and Fox Hills PUD are residential
developments proposed to be located just south of CR 38E and
i.; approximately 0.65 miles west of Taft Hill Road in Larimer County,
Colorado. The site location is shown in Figure 1.
The proposed Wildflower Ridge and Fox Hills developments have
87 single family detached dwelling units. Figure 2 shows a
schematic of the site plan. The site plan shows one access to the
r public road system. This main access will be from CR 38E via Red
Fox Road. A secondary access will be via a meandering local street
k system through Taft Canyon connecting to Taft Hill Road. This
traffic analysis evaluates a single point of access (38E via Red
Fox Road) since the route through Taft Canyon is considered to be
too circuitous. Two future conditions were evaluated: a short
range (1995) future condition and a long range (2010) future
condition. The focus of this review is the roadway cross section
requirements, geometric improvements at key intersections, and
traffic control measures at these intersections.
i II. EXISTING CONDITIONS
Li
A. Existing Road Network
The existing major roads in the vicinity of the development
are CR 38E and Taft Hill Road. CR 38E is an east/west paved two
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F!
WILDFLOWER RIDGE SUBDIVISION
AND
FOX HILLS PUD
SITE ACCESS STUDY
LARIMER COUNTY, COLORADO
SEPTEMBER 1993
Prepared for:
Jan Peterson
Stephen Sivon
Prepared by:
MATTHEW J. DELICH, P.E.
3413 Banyan Avenue
Loveland, CO B053B
Phone: 303-669-2061