TO: Committee of the Whole - Planning and Public Works
FROM: Mayor Angela Birney
DEPARTMENT DIRECTOR CONTACT(S):
|
Public Works |
Chris Stenger |
425-403-5510 |
DEPARTMENT STAFF:
|
Public Works |
Paul Cho |
Engineering Manager |
|
Public Works |
Patty Criddle |
Engineering Supervisor |
|
Public Works |
Hidemi Tsuru |
Senior Engineer |
TITLE:
title
Status Update on Downtown Adaptive Signal Control Project
OVERVIEW STATEMENT:
recommendation
Adaptive signal control technology monitors traffic in real time and automatically adjusts signal timings to match changing conditions, improving flow and overall system performance. Traffic varies throughout the day due to seasonal and weather impacts, variations in work and telecommuting schedules, increased errand and delivery trips, and interactions with new light rail stations. The system responds to these fluctuations by continuously updating timing plans.
This staff report provides a brief overview of Adaptive Signal Control technology and an update on the status, progress, and implementation of the Downtown Adaptive Signal Control project. The report also provides a preview of planned work for the Overlake Adaptive Signal Control project.
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☐ Additional Background Information/Description of Proposal Attached
REQUESTED ACTION:
☒ Receive Information ☐ Provide Direction ☐ Approve
REQUEST RATIONALE:
• Relevant Plans/Policies:
This study session aligns the Adaptive Signal Control work with the Redmond 2050 Comprehensive Plan - Transportation Element, which seeks to improve mobility and support an efficient multimodal network. Adaptive signal timing helps meet those policy goals by improving reliability during changing traffic conditions throughout the day, week, and seasons.
The project also carries out strategies in the Transportation Master Plan (TMP) to use proven technology that enhances system efficiency, supports movement of people and goods, and improves operational safety. Adaptive signal timing supports these strategies by responding to fluctuations in demand caused by telework, deliveries, recreational travel, and weather.
Finally, the project advances the Community Strategic Plan’s Public Safety Objective #3, which calls for improving safety for pedestrians, bicyclists, and motorists and addressing high‑risk locations. Adaptive timing supports these aims by reducing unpredictable queues and transitions that contribute to collision risks, improving intersection safety as travel patterns shift throughout the year.
• Required:
N/A
• Council Request:
N/A
• Other Key Facts:
None
OUTCOMES:
Adaptive signal projects optimize traffic flow on the Downtown area's busiest corridor by responding faster to changing conditions and includes the use of advanced smart sensors, a technology that includes the capability to dynamically adjust signal timing and reduce wait times for vulnerable road users like pedestrians and cyclists.
COMMUNITY/STAKEHOLDER OUTREACH AND INVOLVEMENT:
• Timeline (previous or planned):
N/A
• Outreach Methods and Results:
N/A
• Feedback Summary:
N/A
BUDGET IMPACT:
Total Cost:
Adaptive Traffic Signal Control - Downtown: $1,000,000
Adaptive Traffic Signal Control - Overlake: $972,405
Approved in current biennial budget: ☒ Yes ☐ No ☐ N/A
Budget Offer Number:
CIP
Budget Priority:
Vibrant and Connected
Other budget impacts or additional costs: ☐ Yes ☐ No ☒ N/A
If yes, explain:
N/A
Funding source(s):
Adaptive Traffic Signal Control - Downtown: Business Tax
Adaptive Traffic Signal Control - Overlake: Community Facilities District (CFD)
Budget/Funding Constraints:
N/A
☐ Additional budget details attached
COUNCIL REVIEW:
Previous Contact(s)
|
Date |
Meeting |
Requested Action |
|
7/2/2024 |
Business Meeting |
Receive Information |
Proposed Upcoming Contact(s)
|
Date |
Meeting |
Requested Action |
|
10/20/2026 |
Business Meeting |
Receive Information |
Time Constraints:
N/A
ANTICIPATED RESULT IF NOT APPROVED:
This is an informational briefing only; no Council action is requested.
ATTACHMENTS:
Attachment A: Presentation
Attachment B: Project Information Sheet