HomeMy WebLinkAboutAIR CARE COLORADO - PDP - 2-10 - SUBMITTAL DOCUMENTS - ROUND 1 - TRAFFIC STUDYTable 2.Existing Condition Volumes
Intersection
Time
Period
Southbound
Right Thru Left Total
Westbound
Right Thru Left Total
Northbound
Right Thru Left Total
Eastbound
Right Thru Left Total
Intersection
Total
AM Peak Hour
Driveway
7:00 - 8:00 AM
0 0 0 0
0 34 3 37
1 0 0 1
1 13 0 14
52
Access
&
SE Frontage Rd
PM Peak Hour
0 0 0 0
0 36 2 38
5 0 0 5
0 18 0 18
61
5:00 - 6:00 PM
Sources: All Traffic Data collected November 4, 2009.
Table 3.Emission Testing Facility Trip Generation Analysis
Northglenn Site
Source: Driveway traffic count on October 20, 2009.
1 Emission testing facility peak hours are 11:00 AM - 12:00 PM and 4:00 - 5:00 PM.
2 E 112th Avenue peak hours assumed to be 7:00 - 8:00 AM and 5:00 - 6:00 PM.
Fort Collins Site
Source: Driveway traffic count on October 20, 2009.
Emission testing facility peak hours assumed to be 11:00 AM - 12:00 PM and 4:00 - 5:00 PM.
2 SE Frontage Road peak hours assumed to be 7:00 - 8:00 AM and 5:00 - 6:00 PM.
Table 1.Northglenn Emission Testing Facility Driveway Count
west Access
East Access
Driveway Totals
Hour
Entering
& Exiting
Exit Only
Beginning
NB
SB Total
NB
ting
Total
12:00 AM
0
0
0
0
0
0
0
1:00 AM
0
0
0
0
0
0
0
2:00 AM
0
0
0
0
0
0
0
3:00 AM
0
0
0
0
0
0
0
4:00 AM
0
0
0
0
0
0
0
5:00 AM
1
1
2
0
1
1
2
6:00 AM
1
1
2
5
1
6
7
7:00 AM
3
19
22
0
19
3
22
8:00 AM
10
39
49
0
39
10
49
9:00 AM
13
39
52
14
39
27
66
10:00 AM
15
52
67
15
52
30
82
11:00 AM
1 17
57
74
26
57
43
100
12:00 PM
26
39
65
47
39
73
112
1:00 PM
24
54
78
29
54
53
107
2:00 PM
13
42
55
31
42
44
86
3:00 PM
21
50
71
39
50
60
110
4:00 PM
23
63
86
29
63
52
115
5:00 PM
13
10
23
24
10
37
47
6:00 PM
5
0
5
17
0
22
22
7:00 PM
1
0
1
1
0
2
2
8:00 PM
0
0
0
0
0
0
0
9:00 PM
1
0
1
0
0
1
1
10:00 PM
0
2
2
3
2
3
5
11:00 PM 1
1
0
1 1
0 1
0
1
1
Daily Total
188
468
656
280
468
468
936
Sources: All Traffic Data collected Tuesday, October 20, 2009.
Peak Hour Counts
Condition
Hour
Beginning
Driveway Totals
Entering Exiting Total
AM Peak Hour of the Facility (Generator)
7:00 AM
19
3
22
AM Peak Hour of SE Frontage Road (Adjacent Street)
11:00 AM
57
43
100
PM Peak Hour of the Facility (Generator)
4:00 PM
63
52
115
PM Peak Hour of SE Frontage Road Adjacent Street
5:00 PM
1 10
37
47
PEAK OF GENERATOR
PEAK OF ADJACENT STREET
a0
n
a
a °
o o
N m
4k.35(39)
6(2)J, 4L24(6)
9(10)=> O a4(4)
10(18)d O a0(0)
6(2)='J O «2(2)
0(15)� O <=0(0)
XX(XX) — AM PEAK HOUR (PM PEAK HOUR)
Exhibit 5.Site Generated Trips
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CONSULTING ENGINEERS
1 2499 WEST COLVn AVE.
P.O. Box 151500
LAKEWOOD, GO B021 5
303.431 .61 00
FAX 303.431 .4028
FUTURE WITH SITE (PEAK OF GENERATOR)
FUTURE WITH SITE (PEAK OF ROAD)
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/=3(2)
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0
XX(XX) - AM PEAK HOUR (PM PEAK HOUR)
Exhibit 4.Existing and Future Volumes
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CONSULTING ENGINEERS
1 2499 WEST COLFAX AVE.
P.O. Box 1 51 500
LAKEWOOO, CO B021 5
303.43 1.61 00
FAX 303.431.4028
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Exhibit 2.Fort Collins Air Care Colorado Concept Site Plan
Exhibit 1.Fort Collins Site Location
MEMORANDUM
Page 4
site, based on the peak hour of the generator, are 35 during the AM peak hour and 39 during the PM
peak hour. The right -turn volume is considerably lower for the peak hour of the adjacent street traffic.
Therefore, the right -turn volume at the main access does not satisfy the requirements for a deceleration
lane based on the projected volumes and roadway conditions.
Conclusions & Recommendations
CDOT requested that the driveway operations be switched such that the main access for the Air Care
Colorado project site be located to the northeast and the exit only driveway be located to the southeast
and aligned with the auto dealership driveway across SE Frontage Road. As shown in the attached
concept site plan (Exhibit 2), these changes have been made. CDOT also asked that the site -generated
volumes be identified for the two driveway accesses. The attached volume exhibits (Exhibits 4 & 5) show
the existing, site -generated and future volumes. In addition, an auxiliary lane evaluation was conducted
to determine K a right -turn deceleration lane would be required for the only entrance to the site. The
criteria were not satisfied whether the peak hours of the generator or the adjacent street traffic were
applied.
Based on the land use proposed for the Air Care Colorado site and the associated site -generated trips,
we recommend that CDOT approve the proposed project with no required improvements from the
concept site plan as a result of the traffic conditions.
Attachments: Exhibit 1.Fort Collins Site Location
Exhibit 2.Concept Site Plan
Exhibit 3.Northglenn Emission Testing Facility Count Locations
Exhibit 4.Existing and Future Volumes
Exhibit 5.Site-Generated Volumes
Table 1.Northglenn Emission Testing Facility Driveway Count
Table 2.Existing Condition Volumes
Table 3.Emission Testing Facility Trip Generation Analysis
MEMORANDUM
Page 3
• E Mulberry Street is a higher classified and more contiguous roadway.
• E Mulberry Street offers more lanes of travel with two through lanes in each direction and left and
right -turn lanes. E Prospect Road is a two-lane roadway with no turn lanes.
• E Mulberry provides both direct access from Downtown Fort Collins and a cloverleaf interchange
with 1-25. E Prospect Road has a diamond interchange with 1-25.
• The E Mulberry Street and SE Frontage Road intersection will provide a newly constructed traffic
signal, while the SE Frontage Road is stop controlled at the E Prospect Road intersection.
Based on the difference in the quality of the regional access and the location of the population to be
serviced by the Air Care Colorado facility, the site -generated trips are anticipated to be oriented with 80
percent to the north and the remaining 20 percent to the south.
With entering vehicles only permitted to access the Air Care Colorado site via the main access, 100
percent of the inbound trips were distributed to that driveway. However, with two driveways from which to
exit the site, a determination of the number of trips expected to use each driveway had to be made. The
driveway counts at the Northglenn station were utilized to determine the distribution between exiting
vehicles. The count showed that during the AM peak hour of the generator 40 percent exited from the
main access and 60 percent from the exit only driveway. Similarly, during the PM peak hour of the
generator 44 percent exited via the main access and 56 percent at the exit only driveway. For the peak
hours of the adjacent street traffic, 100 percent of the vehicles exited at the main access in the morning
and 35 percent in the afternoon, with the remaining 65 percent exiting by way of the exit only during the
PM peak hour. These same percentages were applied to the proposed site in Fort Collins for distributing
the site -generated trips.
Volume
The existing volumes along SE Frontage Road at the proposed driveway accesses for the Air Care
Colorado facility were developed from the traffic count. The volumes are illustrated in the attached
Exhibit 4. Site -generated trips for the proposed emission testing facility were developed by combining
the trip generation with the distribution and applying the results to the movements at the two site
accesses along SE Frontage Road. The resulting trips for both the peak hours of the generator and the
peak hours of the adjacent street traffic are provided in the attached Exhibit 5.
Future volumes were also developed during both the peak hours of the generator and the peak hours of
the adjacent street traffic by combining the existing volumes with the site -generated trips. The resulting
volumes are also illustrated in Exhibit 4.
Right -turn Deceleration Lane Evaluation
An evaluation was conducted to compare the roadway and volume conditions along SE Frontage Road
at the proposed Air Care Colorado main access to the requirements identified for an auxiliary right -turn
deceleration lane in the State Highway Access Code (CDOT, 2002). The roadway was determined to
resemble the CDOT access category of Frontage Road (F-R), which is stated in the CDOT Code as:
"...assigned only to roadways that are designated as frontage or service roads where there is no
intended purpose of providing for long distance traffic movements." (CDOT, page 45)
The criteria provided in the CDOT Code indicates that a deceleration lane should be considered for the
F-R access category wherever a right -turn volume of greater than 50 vehicles is expected during the
peak hour of operation along a roadway with a posted speed limit under 40 mph. SE Frontage Road has
a posted speed limit of 30 mph. The projected volumes for the westbound right -turn movement into the
MEMORANDUM
Page 2
• The AM peak hour of the adjacent roadway (SE Frontage Road) was assumed to be between
7:00 and 8:00 AM, during which time 22 trips were counted with 86% entering and 14% exiting.
• The PM peak hour of the adjacent roadway (SE Frontage Road) was assumed to be between
5:00 and 6:00 PM, during which time 47 trips were counted with 21% entering and 79% exiting.
In addition, an intersection turning movement count was conducted along SE Frontage Road at the
driveway for the auto dealership across from where the Air Care Colorado facility is proposed. This count
was collected on Wednesday, November 4, 2009 both during the morning peak period (7:00 to 9:00 AM)
and during the afternoon peak period (4:00 to 6:00 PM). The morning peak hour of the roadway at this
location was found to be 7:00 — 8:00 AM and the afternoon peak hour was reported as 5:00 — 6:00 PM.
The count shows limited volumes accessing the existing driveway for the auto dealership during these
peak hours. A summary of the intersection count is provided in the attached Table 2.
Trip Generation
Since there are no established trip rates in the Institute of Transportation Engineers' reference document,
Trip Generation, a Edition, for the anticipated emission testing facility land use, a driveway count for a
reasonably comparable, existing emission testing facilities in the area was utilized. The trips counted at
the Northglenn location were related to the Fort Collins site to develop a trip generation for the proposed
facility. The existing characteristics and statistics of the Northglenn facility were compared to those
anticipated and projected for the Fort Collins facility. According to the facility owner, the characteristic
most likely to relate the number of trips between facilities is the number of daily vehicles tested. On the
day of the count, the Northglenn facility tested 327 vehicles. The Fort Collins facility is projected to
service approximately 250 vehicles on a typical similar day based on census data and known registered
vehicles in the area.
The peak hours of the emission testing facility (the generator) was found to occur in different hours than
the peak hour of the adjacent street traffic. Emission testing facilities were found to peak in the morning
during the 11:00 AM hour and in the afternoon during the 4:00 PM hour, while the traffic on the adjacent
SE Frontage Road currently peak during the 7:00 AM hour and the 5:00 PM hour. There is a significant
difference between the trips generated during the peak hours of the generator compared to the peak
hour of the adjacent street traffic. The trips during the peak hours of the generator are expected to be 76
total in the AM peak, with 44 entering and 33 exiting, and 88 in the PM peak, with 48 entering and 40
exiting. In comparison, only 37 total trips are expected during the AM peak hour of the adjacent street
traffic, with 30 entering and 8 exiting, and 36 total trips during the PM peak hour, with 8 entering and 28
exiting.
The emission testing facility is expected to generate 716 trips throughout the course of a day. The same
number of trips (358) are expected to enter the site and exit the site in a day. All of the trip generation
results are summarized in the attached Table 3.
Distribution
Given the location of the property for the proposed Air Care Colorado site along the SE Frontage Road
immediately east of 1-25, regional access will come from either the north or the south. Both E Mulberry
Street (SH 14) to the north and E Prospect Road (CR 44) to the south have full movement interchanges
with 1-25. However, a majority of trips for the site would be expected to be oriented to/from E Mulberry
Street to the north as this roadway is a more convenient and a more attractive roadway for accessing the
SE Frontage Road compared to E Prospect Road.
The site is substantially closer to the regional roadway to the north. The property is less than % of
a mile from E Mulberry Street, whereas E Prospect Road is more than a mile to the south.
MARTIN / MARTI N
CONSULTING ENGINEERS
To: Gloria Hice-Idler, CDOT Date:
From:
Copy Cary Schreiner, Envirotest Systems Project No.:
To: Aaron Ojala, Entasis Group
Jim Mokler, Realtec Project Title:
Craig MacPhee, Martin/Martin
RE: Air Care Colorado — Fort Collins — Traffic Evaluation
MEMORANDUM
Page 1 of 11
November 17, 2009
Aaron S. Neumann, P.E., PTOE
21045.C.75
Air Care Colorado — Fort Collins
Envirotest Systems, Inc. is proposing to build an Air Care Colorado vehicle emission testing facility in the
City of Fort Collins, Colorado. The proposed site is located along the northwest side of the relocated SE
Frontage Road less than 114 of a mile south of E Mulberry Street (SH 14), which is in the southeast
quadrant of the cloverleaf interchange with Interstate 25. The site location is shown on the attached
Exhibit 1.
The Air Care Colorado facility is proposed to have direct access from SE Frontage Road, which is a
three -lane roadway with a striped center continuous left -turn lane and a posted speed limit of 30 mph.
The developer is proposing to have two driveways for access to the property. The main entry is proposed
near the northeast end of the property, which will accommodate both entering and exiting vehicles. The
second driveway is proposed close to the southwest edge of the property across from the existing
driveway for an auto dealership on the opposite side of SE Frontage Road. This access will be for exiting
traffic only and will be signed as such. The most recent version of the concept site plan has been
attached as Exhibit 2.
The following content includes a list of the traffic data collected, the trip generation methodology and
resulting site -generated trips, the driveway volumes, an assessment of auxiliary lanes for the proposed
site, and our professional recommendations.
Data Collection
A driveway count was conducted at the existing Air Care Colorado emission testing facility located in
Northglenn, Colorado by All Traffic Data, Inc. at the direction of Martin/Martin. The Northglenn site was
selected because this location has the same number of general testing lanes, similar driveway access
(one full movement and one exit only), and a comparable population base to the proposed Fort Collins
site.
The data was collected on Tuesday, October 20, 2009 for a full 24-hour period at both of the facility
driveways, as identified on the attached Exhibit 3. The west access is a full movement driveway
accommodating entering and exiting vehicles, while the east access is an exit only driveway. A summary
of the data collection is provided in the attached Table 1 and below.
• The count results included a total of 936 daily trips, with 50% entering and 50% exiting or 468
trips entering and 468 trips exiting the site.
• The AM peak hour of the generator was found to occur between 11:00 AM and 12:00 PM, during
which time 100 trips were counted with 57% entering and 43% exiting.
• The PM peak hour of the generator was between 4:00 and 5:00 PM, during which time 115 trips
were counted with 55% entering and 45% exiting.
12499 West Colfax • P.O. Box 151500 • Lakewood, Colorado 80215 • Telephone: 303-431-6100 • www.martinmartin.com
Civil Department Fax: 303-431-4028 • Structural Department Fax: 303-431-6866 • Marketing Department Fax: 303-456-9923
ENGINEER'S STATEMENT
This report for the traffic analysis of the Air Care Colorado Emission Testing Facility
project, was prepared by me (or under my direct supervision) in accordance with the
provisions of the Colorado Department of Transportation and the City of Fort Collins.
s-
Aaron S. Heumann, P.E., PTOE
State of Colorado Registration No. 39 A
AIR CARE COLORADO
EMISSION TESTING FACILITY
TRAFFIC STUDY
TECHNICAL MEMORANDUM
PREPARED O7'
FOR:
DEPARTMENT OF TRANSPORTATION
CDOT Region 4
1420 2Id Street
Greeley, CO 80631
(970) 350-2148
r Cage
Colorado
O�Mag ww can tsr clwm air
PREPARED City of
FOR: / Fart lEolbn$
City of Fort Collins
281 N. College Ave., Suite 100
Ft. Collins, CO 80524
(970) 221-6601
PREPARED'I� MARTIN /MARTIN DEVELOPER: EnvirOtest
BY: CONSULTING ENGINEERS
Systems
Martin/Martin
12499 West Colfax Avenue
Lakewood, Colorado 80215
(303)431-6100
Envirotest Systems Inc.
5175 Marshall Street
Arvada, CO 80002-4628
(303)456-7034
PRINCIPAL -IN -CHARGE: Bill P. Willis, P.E.
PROJECT MANAGER/TRAFFIC ENGINEER: Aaron S. Heumann, P.E., PTOE
21044.C.75