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Greenlight Traffic Engineering, LLC
S 14050 N 83rd Ave, Ste 290, Peoria, AZ 85381
T (602) 499-1339 W greenlightte.com
1 of 5
June 30, 2022
Mr. Sina Sabeti
Owner
Next Page Construction
13951 N Scottsdale Rd, Unit 211
Scottsdale, AZ 85254
Re:
Glendale 23 | Traffic Impact Statement
NEC 83rd Ave/Glendale Ave, Glendale, AZ
APN 142-27-004
1 INTRODUCTION
This Traffic Impact Statement (TIS) was prepared by Greenlight Traffic Engineering (Greenlight) for the proposed
Glendale 23 development generally located on the northeast corner of 83rd Avenue and Glendale Avenue in
Glendale, AZ (Project), as shown in Figure 1. The Project has frontage along 83rd Avenue and along 81st Avenue
approximately 725 feet north of Glendale Avenue. 83rd Avenue is owned and maintained by the City of Glendale.
The purpose of this study is to document existing conditions and the proposed project site plan, as well as
calculate anticipated site-generated trips associated with the Project.
The Project will include the development of a 5.98-acre parcel with 23 dwelling units of single-family residential,
as shown in the site plan (Attachment A). The Project is forecast to generate 24 AM peak hour trips, 26 PM peak
hour trips, and 261 average daily trips (ADT) based on Institute of Transportation Engineers (ITE) Land Use 210
“Single-Family Detached Housing”.
The Project site is currently a vacant dirt lot with native vegetation. The Project is bounded by a tennis club
complex to the north, residential units to the south, 81st Avenue to the east, and 83rd Avenue to the west. The
expected Project opening year is 2023.
Alan Heathcoat P.E.
Principal Engineer
Glendale Transportation
04/04/2023 8:57:24 AM
APPROVED
Be sure to continue to work with the City of Glendale for any 83rd Ave
construction. Plans are currently under review for widening 83rd Ave to be
a 2-1-2 in the area of this development. There is a development planned to
the north east that may be using 81st Ave as well. Coordination should be
planned for any construction on 81st Ave.
Greenlight Traffic Engineering, LLC
S 14050 N 83rd Ave, Ste 290, Peoria, AZ 85381
T (602) 499-1339 W greenlightte.com
2 of 5
Figure 1: Project Site Location
2 EXISTING ROADWAY CONDITIONS
2.1
Roadways
83rd Avenue is a north-south paved roadway with one lane in each direction and a two-way left-turn lane
(TWLTL). The cross section generally includes pavement, curb, gutter, and sidewalk on both sides of the roadway;
however, curb, gutter and sidewalk are not present on the east side of the roadway immediately adjacent to the
Project site. The posted speed limit is 40 miles per hour (mph). 83rd Avenue is classified as an Urban Minor
Arterial based on the Arizona Department of Transportion (ADOT) Statewide Federal Functional System Online
Map. 83rd Avenue is classified as an Arterial based on the City of Glendale Transportation Plan (November 2017).
81st Avenue is a north-south paved roadway with no pavement markings. South of the Project site, the cross
section generally includes pavement, with curb, gutter, and sidewalk on the west side of the roadway and dirt
shoulders on the east side of the roadway. 81st Avenue is not paved adjacent to the Project site. There is no
posted speed limit but is assumed to be 25 mph through a residential area. 81st Avenue is not classified on the
ADOT Statewide Federal Functional System Online Map or the City of Glendale Transportation Plan (November
2017).
Glendale Avenue is a 6-lane, east-west paved roadway with three lanes in each direction separated by a raised
median. The cross section includes pavement, curb, gutter, and sidewalk on both sides of the roadway. The
posted speed limit is 40 mph adjacent to the Project site. Glendale Avenue is classified as an Urban Minor Arterial
Project Site
Glendale Ave
83rd Ave
81st Ave
Greenlight Traffic Engineering, LLC
S 14050 N 83rd Ave, Ste 290, Peoria, AZ 85381
T (602) 499-1339 W greenlightte.com
3 of 5
based on the ADOT Statewide Federal Functional System Online Map. Glendale Avenue is classified as a Major
Arterial based on the City of Glendale Transportation Plan (November 2017).
2.2
Intersections
83rd Avenue and Glendale Avenue is a four-leg signalized intersection. The northbound approach consists of
one dedicated left-turn lane, one through lane, and one shared through/right-turn lane; the southbound
approach consists of one dedicated left-turn lane, one through lane, and one shared through/right-turn lane;
the eastbound approach consists of one dedicated left-turn lane, three through lanes, and one dedicated right-
turn lane; the westbound approach consists of one dedicated left-turn lane, two through lanes, and one shared
through/right-turn lane.
81st Avenue and Glendale Avenue is a four-leg unsignalized intersection. The northbound and southbound
approaches consist of one shared left-turn/through/right-turn lane; the eastbound and westbound approaches
consist of one dedicated left-turn lane, two through lanes, and one shared through/right-turn lane.
3 PROPOSED SITE CONDITIONS
3.1
Site Access, Circulation and Parking
The layout of the proposed site is shown on the Site Plan in Attachment A.
Access to the site is provided by one full access driveway along 83rd Avenue and one full access driveway along
81st Avenue; both driveways will be located approximately 725 feet north of Glendale Avenue. There are no sight
distance concerns at the site access driveway locations.
3.2
Trip Generation
The Project will consist of 23 dwelling units of “Single-Family Detached Housing” land use. Based on calculations
in the ITE Trip Generation Manual, 11th Edition, the Project is forecast to generate approximately 24 AM peak
hour trips, 26 PM peak hour trips, and 261 daily trips. Table 1 summarizes the calculated site-generated trip ends.
A detailed trip generation calculation sheet is included in Attachment B.
Table 1: Trip Generation, ITE Trip Generation Manual
Land Use
ITE
Code1
Size
Unit
AM Peak Hour
PM Peak Hour
Daily
Volume
In
Out
Total
In
Out
Total
Single-Family Detached Housing
210
23
Dwelling Units
6
18
24
17
9
26
261
Site-Generated Trip Ends
6
18
24
17
9
26
261
1.
ITE Land Use Code
4 TURN LANE WARRANTS
The need for a right-turn deceleration lane at the 83rd Avenue Project driveway was evaluated based on the
requirements set forth in Section 7.15 of the Maricopa County Department of Transportation (MCDOT) Roadway
Design Manual (RDM) which states:
A driveway right turn deceleration lane is required when either of the following is met:
• The outside lane has an expected volume of 250 vph or greater and the right turn volume is greater
than 55 vph.
• Any three of the below criteria are met:
a. At least 5,000 vehicle per day are using or are expected to be using the adjacent street.
b. The roadway’s posted speed limit is greater than 35 mph.
c. At least 1,000 vehicles per day are using or are expected to use the driveway.
d. At least 30 vehicles are expected to make right-turns into the driveway within a one-hour
period.
Greenlight Traffic Engineering, LLC
S 14050 N 83rd Ave, Ste 290, Peoria, AZ 85381
T (602) 499-1339 W greenlightte.com
4 of 5
The site is expected to experience a maximum of 17 peak hour trips into the site and a maximum of 261 daily
trips, which falls below the minimum threshold values of 30 right-turns and 1,000 vehicles per day listed above.
Therefore, a right-turn deceleration lane is not recommended at the Project driveways.
5 QUEUEING ANALYSIS
A queueing analysis was performed for a left-turn lane at the 83rd Avenue Project Driveway per the requirements
set forth in the MCDOT Roadway Design Manual Section 6.1.8. The queueing analysis was performed assuming
that 100% of the site traffic would be entering the site using a southbound left-turn at the 83rd Avenue site
driveway. This is a highly conservative estimate of the actual number of trips that would be expected to use this
movement; however, since the overall site trips were so low, it was assumed to be sufficient for the purposes of
determining the queue length for that movement.
The storage length equation found below is shown for unsignalized intersection control.
Unsignalized Intersection Storage Length = (vehicles / hour) / (30 periods / hour) * 25 feet / vehicle
The results of the queueing analysis are summarized in Table 2.
Table 2: Queueing Analysis Results
Intersection
Movement
Peak Hour
Entering Volume
Max Queue
Calculation
(ft)
Existing Storage
Length (ft)
Recommended
Storage Length
(ft)
AM
PM
83rd Avenue Project
Driveway
SBL
6
17
15
TWLTL1
No Change
1.
TWLTL = Two-way left turn lane
Based on the results of the queueing analysis shown in Table 2, a southbound left-turn lane at the 83rd Avenue
Project Driveway is recommended to be installed with 15 feet of storage. The existing TWLTL along 83rd Avenue
satisfies these requirements.
6 CONCLUSIONS
The following conclusions are made based on the findings of the Project TIS:
1. The Project is expected to generate approximately 24 AM peak hour trips, 26 PM peak hour trips, and
261 daily trips based on the ITE Trip Generation Manual, 11th Edition.
2. The Project is not expected to have a significant impact to the surrounding roadway infrastructure, as it
generates fewer than 100 peak hour trips.
3. There are no expected sight distance concerns at the proposed site driveways.
4. A northbound right-turn lane at the 83rd Avenue driveway was not found to be warranted by the Project.
5. The existing TWLTL on 83rd Avenue was found to be sufficient to accommodate the required storage for
the southbound left-turn movement into the Project.
7
RECOMMENDATIONS
In summary, the proposed Project is expected to have minimal impacts on the adjacent roadway network. The
following recommendations were developed based on the findings of the Project TIS:
1. Construct half-street improvements along 83rd Avenue and 81st Avenue.
2. Design and construction of the proposed Project improvements should conform to City of Glendale’s
design standards, as applicable.
Greenlight Traffic Engineering, LLC
S 14050 N 83rd Ave, Ste 290, Peoria, AZ 85381
T (602) 499-1339 W greenlightte.com
5 of 5
Sincerely,
Greenlight Traffic Engineering, LLC
Scott Kelley, PE, PTOE
Principal/Project Manager
scottk@greenlightte.com
(602) 499-1339
Attachments:
A –Glendale 23 Site Plan
B – Project Trip Generation
Greenlight Traffic Engineering, LLC
S 14050 N 83rd Ave, Ste 290, Peoria, AZ 85381
T (602) 499-1339 W greenlightte.com
ATTACHMENTS
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LOT 1
LOT 2
LOT 3
LOT 4
LOT 5
LOT 6
LOT 7
LOT 8
LOT 9
LOT 10
LOT 11
LOT 12
LOT 13
LOT 14
LOT 15
LOT 16
LOT 17
LOT 18
LOT 19
TRACT
"B"
LOT 20
LOT 21
LOT 22
LOT 23
TRACT "A"
ZONING R1-7
LOT 41
LOT 40
LOT 38
LOT 39
LOT 36
LOT 37
LOT 35
LOT 32
LOT 34
LOT 33
LOT 31
LOT 30
LOT 29
LOT 19
LOT 18
LOT 17
SW CORNER SECTION 2,
T2N, R1E, G&SRB&M;
FOUND BRASS CAP IN
HANDHOLE
WEST 1/4 CORNER SECTION
2,T2N, R1E, FOUND BRASS
CAP IN HANDHOLE
S
RETENTION BASIN (A)
HW:
BOT:
1+00
2+00
3+00
4+00
5+00
6+00
7+00
8+00
9+00
10+00
11+00
12+00
13+00
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4:1
1101.00
RETENTION BASIN (B)
HW:
BOT:
4:1
4:1
4:1
NOTED
AIF ENGINEERING L.L.C.
SITE PLAN
APN#142-27-004
7111 N 83RD AVE GLENDALE 85303
A PORTION OF SECTION 2, TOWNSHIP 2, NORTH RANGE 1 EAST OF THE GILA AND
SALT RIVER MERIDIAN, MARICOPA COUNTY.
SITE PLAN
APN#142-27-004
7111 N 83RD AVE GLENDALE
85303
LOT NUMBER
MEASURED
RECORD
VEHICLE NON-ACCESS EASEMENT
PUBLIC UTILITY EASEMENT
SIGHT VISIBILITY TRIANGLE
EASEMENT
FACE OF CURB
RIGHT OF WAY
SCREEN WALL
THEME WALL
VIEW FENCE
PROPOSED HDPE STORM DRAIN PIPE
PROPOSED EASEMENT
LOT LINE
RIGHT OF WAY
CENTER LINE
PROPOSED SEWER MANHOLE
PROPOSED SEWER LINE
PROPOSED WATER LINE
PROPOSED FIRE HYDRANT
N.T.S
NORTHERN AVE.
GLENDALE AVE.
83RD AVE.
75TH AVE.
PALMAIRE AVE
Trip Generation Analysis
Project:
221079 NEXT Glendale 23 Traf Stmt
Originator:
Maria Jimenez
Checked:
Alyssa Whitten, PE
Date:
6/20/2022
Data Source:
Site Plan
Reference Manual:
ITE Trip Generation Manual, 11th Edition
Size:
23.00
Independent Variable:
Dwelling Units
Time Period:
Weekday (Monday - Friday), Peak Hour of Generator
Setting/Location
General Urban/Suburban
AM Calc
PM Calc
ADT Calc
AM
PM
Land Use
LUC
Units
Size
In
Out
Total
In
Out
Total
Total
In Out Total In Out Total
ADT
TRIP ENDS
Single-Family Detached Housing
210
Dwelling Units
23.00
26%
74%
T = 0.71(X) + 7.23 64% 36%
Ln(T) = 0.93Ln(X) +0.36
Ln(T) = 0.92Ln(X) + 2.68
6
18
24
17
9
26
261
Subtotal Trip Ends 6
18
24
17
9
26
261