Traffic Study

City of Glendale — Regular Meeting (2025-06-26)

View PDF Item 3 Meeting page

Extracted text (via pymupdf) 6055 characters
59th+Northern Smalls Sliders  
Queuing Study 
 
Prepared for 
Mr. Mitchell Reynolds 
Development Manager 
Cole Valley Partners 
3519 NE 15th Ave, Suite 251 
Portland, OR 97212 
mitchell.reynolds@cvpre.com  
 
Prepared by 
 
 
Submitted to 
City of Glendale  
 
 
1st Submittal 
February 14, 2025 
 
 
 
 
 
 
 
 
 
 
4050 N 83rd Ave, Suite 290, Peoria, AZ 85381  
Contact: Collette Frohlich, P.E.| 480-788-5626 | collettef@greenlightte.com 
GTE Project No.: 241101.02

Greenlight Traffic Engineering, LLC 
S 14050 N 83rd Ave, Ste 290, Peoria, AZ 85381 
 
T (602) 499-1339 W greenlightte.com 
2 of 4 
1 INTRODUCTION 
This queuing statement was prepared for the proposed Smalls Sliders (Project), located on the northwest corner 
of Northern Avenue and 59th Lane, in Glendale, AZ. The proposed Smalls Sliders will be part of commercial 
development with a Dutch Bros facility. This Project will include 800 square feet (SF) of Institute of 
Transportation Engineers (ITE) Land Use Code (LUC) LUC 934 “Fast-Food Restaurant with Drive-Through 
Window”. The Project location is shown in Figure 1. 
The purpose of this study is to estimate the potential drive-through queues associated with the Project and 
address any potential onsite circulation concerns. The Dutch Bros queuing analysis was already completed with 
the Traffic Impact Analysis (Greenlight Traffic Engineering, January 2025). This study has been completed to 
satisfy the City’s planning-level technical report requirements for a new development. 
Figure 1: Project Site Location 
 
2 Proposed Site Conditions 
2.1 
Site Access, Circulation and Parking 
The layout of the proposed building and parking is shown on the Site Plan in Attachment A.  
Primary access to the Project is provided via one full-access driveway at Northern Avenue/59th Lane. 
The drive-through entrance is located on the northeast corner of the building. Vehicles will enter the dual drive-
through lane from a drive aisle on the east side of the site. The drive-through will circulate in a counterclockwise 
direction along the north and west sides of the building until right before the service window, where the dual 
drive-through lanes merge into a single drive-through lane. After the dual-lanes merge, a bypass lane is available 
on the south side of the building for vehicles to exit early after they have received their items. The pickup window 
is located on the west side of the building.  
17 parking spaces are shown on the site plan, including 2 ADA-accessible spaces. 
3 QUEUING DATA COLLECTION AND ANALYSIS 
The Project will include a dual drive-through lane with a queue storage length of approximately 325 feet.  
Project Site 
Northern Avenue 
59th Lane 
59th Avenue

Greenlight Traffic Engineering, LLC 
S 14050 N 83rd Ave, Ste 290, Peoria, AZ 85381 
 
T (602) 499-1339 W greenlightte.com 
3 of 4 
Vehicles will enter the dual drive-through lane near the northeast corner of the building. The dual drive-through 
lanes continue on the north and west sides of the building until right before the service window where it merges 
into a single drive-through lane on the west side of the building.  
A queue analysis was performed using queuing data obtained from existing Smalls Sliders in Baton Rouge, 
Louisiana by Field Data of Services (FDS). The information on the queueing data collected by FDS is provided 
below. 
• 
Locations: 
o 7080 Siegen Ln, Baton Rouge, LA 70809 
o 7610 Bluebonnet Blvd, Baton Rouge, LA 70810 
• 
Data Collection Times 
o Thursday, February 6, 2025 
o Saturday, February 8, 2025 
• 
Data Collection Times 
o 11 AM – 9 PM 
• 
Queue Count Frequency Increment 
o 1 minute 
The observed queuing data is provided in Attachment B. Scoping correspondence with the City for queueing 
data collection is provided in Attachment C. 
The queuing data collected at similar Smalls Sliders is summarized below in Table 1. 
Table 1: Queuing Data Summary 
No. 
Location 
Thursday 
Saturday 
Max 
Queue 
95th- 
Percentile 
85th- 
Percentile 
Max 
Queue 
95th- 
Percentile 
85th- 
Percentile 
1 
7080 Siegen Ln, Baton Rouge, LA 70809 
6 
3 
2 
5 
4 
3 
2 
7610 Bluebonnet Blvd, Baton Rouge, LA 70810 
8 
6 
4 
7 
5 
4 
Max 
8 
6 
4 
7 
5 
4 
Queue Length @ 25’ per vehicle 
200’ 
150’ 
100’ 
175’ 
125’ 
100’ 
The queueing data shows a maximum queue of 8 vehicles, a maximum 95th-percentile queue of 6 vehicles, and 
a maximum 85th-percentile queue of 4 vehicles. 
With the assumption of 25 feet of queuing space per vehicle, the maximum vehicle queue length needed would 
be 200 feet. Based on the collected queue data and queue length calculations, the proposed queue storage of 
325 feet is sufficient to accommodate the maximum queue storage length expected. 
4 Conclusions 
The following conclusions are made based on the findings of the Project queuing statement: 
1. The queuing data collected shows a maximum queue of 8 vehicles, a maximum 95th-percentile queue 
of 6 vehicles, and a maximum 85th-percentile queue of 4 vehicles for the two days that were observed. 
2. Using a 25-foot average vehicle length, the maximum queue length is calculated at 200 feet, the 
maximum 95th-percentile queue length is calculated at 150 feet, and the maximum 85th-percentile queue 
length is calculated at 100 feet. 
3. The proposed queue storage at the proposed site of 325 feet will be able to accommodate the maximum 
queue expected.

Greenlight Traffic Engineering, LLC 
S 14050 N 83rd Ave, Ste 290, Peoria, AZ 85381 
 
T (602) 499-1339 W greenlightte.com 
4 of 4 
5 
RECOMMENDATIONS 
In summary, the proposed Project is expected to have minimal impacts on the overall commercial development 
and adjacent roadway network. The following recommendations were developed based on the findings of the 
Project queuing statement: 
1. Design and construction of the proposed Project improvements should conform to the City of Glendale’s 
design standards, as applicable. 
 
Attachments: 
A – Smalls Sliders Site Plan 
B – Existing Baton Rouge Queuing Data 
C – Scoping Correspondence with the City