Eastern line (Kolkata Suburban Railway)

The Eastern lines of Kolkata Suburban Railway comprises 14 Local train routes that are operated by the Eastern Railway zone, serving the Kolkata metropolitan region and its neighbouring areas in West Bengal, India. The Line consists of a total 266 stations and the entire line is at grade. It mainly consists of two sections according to its division area and the main two terminal stations of Kolkata metropolitan region: the Howrah section, centered around Howrah railway station and the Sealdah Section centered around Sealdah railway station.

The line consists of a total of '14 corridors': 6 Corridors in the Howrah section, 7 corridors in the Sealdah section and there's a separate corridor connecting the two sections. In the Howrah Section first two corridors are from Howrah to Barddhaman- one via the Mainline through Bandel and the other via the Chord line through Dankuni, the third corridor runs from Howrah to Goghat via Seoraphuli Jn, while the fourth corridor connects Howrah to Katwa via Bandel Jn, there is one small fifth corridor also available between Howrah and Belur Math via Liluah and the sixth corridor runs between Barddhaman and Katwa. In the Sealdah section, among the 7 corridors the mainline runs from Sealdah to Gede, which is situated at the India-Bangladesh Border. The second corridor is from Sealdah to Krishnanagar City Jn via Ranaghat. The third corridor connects Shantipur to Sealdah via Ranaghat, The fourth one is from Bangaon to Sealdah via DumDum Jn, fifth one is connecting Hasnabad to Sealdah via DumDum Jn and Barasat Jn, the sixth line connects Sealdah to Kalyani Simanta via Kalyani railway station and the seventh corridor is a Single-track railway corridor between Ranaghat and Bangaon. The other line is the important Bandel -Naihati line which serves as a crucial link between the two sections of the eastern line.

The Major Carsheds on this line are at Howrah, Bandel, Narkeldanga, Barasat and Ranaghat on both of the sections.