T4 Topkapı - Mescid-i Selam tram line is a light rail line in Istanbul, Turkey, operated by Istanbul Ulaşım AŞ. It runs from Topkapı north to Mescid-i Selam, a total of 15.3 km (9.5 mi). The T4 line operates its own right-of-way in a street median for most of its route, though with a few at-grade crossings, thus technically making it light rail though the operator Metro Istanbul categorizes it as a tramline.
T4 line go from Kiptaş Venezia station to Topkapı direction
Topkapı-bound Istanbul Tram line T4 train at Şehitlik station
Line M1, officially referred to as the M1 Yenikapı–Atatürk Airport/Kirazlı metro line, also known as the Istanbul Light Metro, is a rapid transit line of the Istanbul Metro. It is colored red on the maps and route signs. Opened in 1989, it was the first rapid transit line in Istanbul and Turkey and its opening started the revival of mass-transit in Turkish cities.
M1 (Istanbul Metro)
Aksaray station
Atatürk Airport-bound Istanbul Metro line M1 train at Davutpaşa station.
Atatürk Havalimanı station, the terminus (serving Istanbul Atatürk Airport), has buffer stops at end of the platform