Darıca

Darıca station (Turkish: Darıca istasyonu) is a station on the Marmaray commuter rail in Darıca, Turkey. It is a new station that has been added to the railway with the Marmaray project. Construction of the station started in 2013 and was structurally completed in 2014, along with the other eight stations located between Pendik and Gebze. Commuter rail service began on 13 March 2019.The station has two tracks with an island platform and one express track on the south side for high-speed and intercity trains.

Gebze station (Turkish: Gebze garı) is a station on the Istanbul-Ankara railway in Gebze, Turkey. It is located between Plevne and Etem Paşa Avenues just southwest of Gebze's city center. It was the eastern terminus of the Haydarpaşa suburban commuter service until 2013 and in 2019 became the eastern terminus of the new Marmaray commuter rail line. Gebze was opened in 1873 as part of the Constantinople-Izmit railway, built by the Ottoman government. The Anatolian Railway (CFOA) took over the line in 1880 and continued to build further east from Izmit. The CFOA was nationalized in 1924 via the Anatolian-Baghdad Railway which was absorbed by the Turkish State Railways (TCDD) in 1927. On 29 May 1969 commuter service to and from Haydarpaşa Terminal was inaugurated and the line was electrified up to Gebze. Gebze became one of the most used stations in Turkey during this period as many commuters used the line to get to Istanbul. Commuter service was ended in June 2013 in order to rebuild the station for the new Marmaray commuter rail line as well as the new Istanbul-Ankara high-speed railway. The station reopened on 29 October 2014 with YHT High-speed service to Ankara and Konya via Izmit and Eskişehir from Pendik. Marmaray service to Halkalı entered service on March 12, 2019. The 1969 station had two island platforms and four tracks. The rebuilt station has two island platforms and one side platforms with five tracks.

Potamoi (Ancient Greek: Ποταμοί) was a town of ancient Bithynia located on the road from Libyssa to Chalcedon on the north coast of the Sinus Astacenus, an arm of the Propontis. Its site is located east of Pendik, in Asiatic Turkey.

Osmangazi station (Turkish: Osmangazi istasyonu) is a station on the Marmaray commuter rail line in Gebze, Turkey. It was previously a station on the Haydarpaşa suburban until 2013, when commuter rail service was suspended. The original station was opened in 1954 with two side platforms and demolished in 2013. Construction of the new station started shortly after and was structurally completed in 2014, along with the other eight stations located between Pendik and Gebze. Commuter rail service resumed on 13 March 2019.The station has two tracks with an island platform and one express track on the south side for high-speed and intercity trains.

Çayırova is a municipality and district of Kocaeli Province, Turkey. Its area is 23 km2, and its population is 150,792 (2022).The district Çayırova was created in 2008 from part of the district of Gebze, along with the districts Darıca and Dilovası. The mayor is Bünyamin Çi̇ftçi̇ (AKP).

Gebze Teknik Üniversitesi – Fatih station (Turkish: Gebze Teknik Üniversitesi - Fatih istasyonu) is a station on the Marmaray commuter rail line in Gebze, Turkey. The station, along with Çayırova, is situated inside the Gebze Technical University campus. Commuter rail service resumed on 13 March 2019.

Gebze Technical University (Turkish: Gebze Teknik Üniversitesi (GTÜ)), formerly known as Gebze Institute of Technology (GIT), is one of two institutes of technology founded in Turkey; The other one is İzmir Institute of Technology. It is a university for undergraduate and graduate studies and research activities located in a specifically selected area in Gebze, one of the most industrialized regions of the Marmara Region. Gebze Technical University is one of the universities that hold the title "research university" in Turkey, which "research university" title is given based on university's academic output by Council of Higher Education.

Dacibyza or Dakibyza (Ancient Greek: Δακίβυζα), or Dacibyze or Dakibyze (Δακιβύζη), was a town of ancient Bithynia located on the road from Libyssa to Chalcedon on the north coast of the Sinus Astacenus, an arm of the Propontis.Its site is located near Gebze, in Asiatic Turkey.

Gebze (Turkish pronunciation: [ˈɟebze]), formerly known as Libyssa, is a municipality and district of Kocaeli Province, Turkey. Its area is 418 km2, and its population is 407,019 (2022). It is situated 65 km (30 mi) southeast of Istanbul, on the Gulf of Izmit, the eastern arm of the Sea of Marmara. Gebze is the largest district by population size in the province as of 2022, exceeding İzmit, the provincial capital.

Çayırova railway station (Turkish: Çayırova istasyonu) is a railway station in Çayırova, Turkey. It is one of two stations (the other being Fatih) located within the campus of the Gebze Technical University. The station was originally built in 1954 by the Turkish State Railways and between 1969 and 2013, it was a stop along the Haydarpaşa suburban. In 2013, the station was closed and subsequently demolished to make way for a new station and the widening of the railway. The Çayırova station was structurally completed in 2014, along with the other eight stations located between Pendik and Gebze; but due to delays with the project, the station is not served by any train. Commuter rail service resumed on 13 March 2019.The station has two tracks with an island platform and one express track on the south side for high-speed and intercity trains.

The TÜBİTAK Informatics and Information Security Research Center (Turkish: TÜBİTAK Bilişim ve Bilgi Güvenliği İleri Teknolojiler Araştırma Merkezi), shortly TÜBİTAK BİLGEM, is a Turkish scientific and technological center carrying out research projects through its subordinate institutes on various fields of informatics. It was established in 2010 by the Scientific and Technological Research Council of Turkey (Turkish: Türkiye Bilimsel ve Teknolojik Araştırma Kurumu, TÜBİTAK) in Gebze, Kocaeli Province as an umbrella institution of the existing Information Technologies Institute (BTE) and National Research Institute of Electronics and Cryptology (UEKAE) following their transfer from the TÜBİTAK Marmara Research Center.

The National Research Institute of Electronics and Cryptology of Turkey (Turkish: Ulusal Elektronik ve Kriptoloji Araştırma Enstitüsü), shortly UEKAE, is a national scientific organization with the aim of developing advanced technologies for information security. UEKAE is the most prominent and also the founder (first) institute of the TÜBİTAK. The institute was founded by Yılmaz Tokad, professor at ITU (Istanbul Technical University), and four researchers under his supervision in the building of engineering at METU (Middle East Technical University)in 1972, with the name Electronic Research Unit. In 1995 the institute's name has become National Research Institute of Electronics and Cryptology and moved to Gebze, Kocaeli.