Sun Tran Comprehensive Operational Analysis (COA) Study

The City of Tucson and Sun Tran, in partnership with the Pima Association of Governments (PAG), evaluated all aspects of Sun Tran, Sun Link, Sun Express, and Sun Shuttle services throughout Tucson and the greater Tucson area to determine potential improvements through the COA.

COA Service Changes

April 2026

Sun Tran is proposing route and service changes enhancements to Routes 4, 8, 9, 102X, 104X, and 108X, new Route 124X, Sun On Demand, and new Sun Tran bus stop sign design. These recommendations are part of the 2024 Comprehensive Operational Analysis (COA) study. The recommendations will need to be approved by Mayor and Council in order to take effect in August of 2026.

Below you can view Tuesday’s, April 14 online input session and/or download the meeting slides and brochure:

Online Community Input Session – April 14, 2026

Community input session slides

Community Input session brochure

Disclaimer: This outreach is to share information and gather your feedback on current and future transit plans. Participation is completely voluntary. Your input will be reviewed along with cost, operations, and other considerations, and will help guide recommendations that are ultimately decided on by the Mayor and Council.

Starting April 13 through April 27, Sun Tran will hold 10 public input sessions to learn about the proposed changes. We encourage riders and community members to attend a one-hour session and provide feedback on the future of Sun Tran’s transit system. Here’s how you can participate:

Monday, April 13 – University of Arizona Student Union- San Pedro Room
Tuesday, April 14 – Virtual Meeting
Wednesday, April 15 | 5 p.m. | El Rio Neighborhood Center: 1390 W. Speedway Blvd.
Thursday, April 16 | 2 p.m. | Woods Memorial Library: 3455 N. First Ave.
Friday, April 17 | Noon | Udall Center: 7200 E. Tanque Verde Rd.
Monday, April 20 | 5 p.m. | Nanini Library: 7300 N. Shannon Rd.
Tuesday, April 21 | Noon | Clements Center: 8155 E. Poinciana Dr.
Thursday, April 23 | 5 p.m. | Quincie Douglas Center: 1575 E. 36th St.
Friday, April 24 | Noon | Joel D. Valdez Main Library: 101 N. Stone Ave.
Monday, April 27 | Virtual Link: https://teams.microsoft.com/meet/23146618465047?p=1PdF0a6DXB2l7uTsYg

August 2025

Watch the video about Sun Tran’s COA August 2025 changes.

Watch the video to learn more about the implementation of Sun Tran’s COA changes.

Click here to view maps of august changes

Watch the video about the latest virtual public meeting.

Click the video to the right to view our latest virtual public input meeting:

February 2025

Route 3, 11, 37, and 50 will have changes beginning February 23, 2025.

Route 3 & 37

Route 37 will serve Stella Road between Pantano Road and Camino Seco instead of Route 3. Camino Seco from Stella Road and Irvington Road will now be served by Route 37. All service on Escalante Road has been discontinued. There are no frequency changes or service changes planned at this time.

View and Download Maps HERE

Route 11 & 50

Route 11 and Route 50 will merge and no longer travel on South 6th Avenue between Ajo Way and Laos Transit Center. Route 11 will now extend west on Ajo Way to Mission Road, discontinuing Route 50. There are no frequency changes or service changes planned at this time.

View and Download Map HERE

What We’ve Accomplished:

We have conducted a thorough engagement process with the community to gather valuable feedback. Here are the events that have taken place since 2024.

2024 – Following nearly 11 months of public outreach to gather input on proposed changes to improve transit efficiency, equity, and effectiveness, Sun Tran staff will host six (6) public meetings to discuss the Comprehensive Operational Analysis (COA) proposed transit changes.

In-Person Meetings:

Seven meetings allowed the community to share feedback in person. Here are the details:

Fred Archer Recreation Center
Tucson City Council Ward 2 Office
Woods Memorial Library
Pascua Yaqui Tribal Chambers
Miller-Golf Links Library
Quincie Douglas Recreation Center
Tucson City Council Ward 6 Office

March 2025 – Sun Tran hosted 9 in-person and two virtual Title VI Open House Meetings to engage with the community about equitable transit and upcoming service changes in August 2025. The following routes will be impacted: 2, 12, 16, 18, 21, 23, 24, 25, 26, 27, 29, and 62.