🚊 Sakarya 2026: The Adapazarı–Serdivan Urban Rail Project

المسافر · Aug 30, 2026

Sakarya’s transport planning now includes an urban railway through Adapazarı and Serdivan alongside buses and private cars. On 8 October 2026, the municipality announced that site preparation had begun for the Adapazarı–Serdivan tram alignment after the tender. The initial step involved relocating 178 magnolia trees from the median on Medeniyet Avenue in Serdivan for replanting in suitable locations. These are preparatory works; passenger services have not been announced.

Preparing the median for the tram alignment on Medeniyet Avenue, documented in the municipality’s 8 October 2026 announcement. Photo: Sakarya Municipality.

1. The current project

On 31 July 2026, the Ministry of Transport and Infrastructure described:

15.2 km of urban rail.
19 stations.
Connections between central Adapazarı, Serdivan, the university and densely populated areas.
A tender held, with evaluation and finalisation continuing at that time; site preparation was subsequently announced in October.

The initial 2024 proposal described 12 km and 15 stations. The later 2026 figures reflect the expanded project and should take precedence over the early presentations.

2. Where is the route planned?

The municipality’s announced alignment starts near the new Sakarya Atatürk Stadium, follows 15 Temmuz Avenue, Yeni Cami, Democracy Square, Kudüs Avenue, Orta Gar, Çark Avenue and Muhsin Yazıcıoğlu Avenue, and reaches the Tunatan junction.

Two branches are described:

Via Medeniyet Avenue to Sakarya University’s campus.
Via 2. Cadde, Sapak Mosque and Mehmet Akif Ersoy Avenue to Serdivan Sports Hall and Yazlık junction.

The project is intended to serve students, workers, shoppers and residents, with a practical everyday role beyond visitor travel.

Relocating magnolia trees from the project alignment for replanting. This image documents site preparation. Photo: Sakarya Municipality.

3. The tram project is distinct from ADARAY

ADARAY: An existing suburban train service on the regional railway.
Metrobüs: High-capacity buses on a rapid-transit corridor.
The new line: An urban rail system within Adapazarı and Serdivan.

The municipality supports integration through its 60-minute transfer arrangements. It also reported approximately 3.65 million Metrobüs passengers in its first year, with 192 daily trips, illustrating existing public-transport demand.

Mode	Status and use
ADARAY	Existing suburban trains; check stations and timetable
Metrobüs	Existing bus service; check direction and transfer points
Adapazarı–Serdivan tram	Preparatory works have begun; do not use it to plan a journey today
Local buses	Complete the journey according to current routes and diversions

4. Potential effects within the city

If delivered as planned, the line could:

Reduce car dependence between the university and centre.
Improve access to Democracy Square, markets and the stadium.
Increase demand near stations, with effects varying by location.
Change parking provision and bus routes.
Support commerce around interchanges.
Encourage student housing along the university corridor.

Construction is likely to bring traffic diversions, noise and utility works. Station locations and details may change during delivery.

5. When could passenger services begin?

Some local transport documents identify 2027 as a target. This remains a timetable objective, not a guaranteed opening date. The project has moved from the procurement stage described in August to the site preparation announced in October, but the latest announcement does not give a binding start date for passenger services. Construction, track, power and signalling work, testing and safety certification must precede service.

Do not base a property or business decision solely on an unconfirmed opening date. Check the final alignment, exact station entrances and surrounding traffic arrangements.

Stage	What is established and what it means
Tender	Held; this does not open the railway
Site preparation announced on 8 October 2026	Tree relocation began on Medeniyet Avenue ahead of the project
Construction, systems and testing	Required before service; site preparation does not establish completion
Passenger service	Requires an operating announcement, timetable and fares from the operator

Protecting tree roots during relocation from the tram alignment. Photo: Sakarya Municipality.

6. Conclusion

Adapazarı–Serdivan could provide more dependable connections between the university, centre and stadium. The accurate 2026 description is a project with site preparation under way, with passenger services still to come. Its eventual value will depend on integration with ADARAY, Metrobüs, buses, walking and cycling.

Related topics

🚊 Sakarya 2026: The Adapazarı–Serdivan Urban Rail Project

المسافر

Active member

1. The current project​

2. Where is the route planned?​

3. The tram project is distinct from ADARAY​

4. Potential effects within the city​

5. When could passenger services begin?​

6. Conclusion​