Meanings of eastern rail in English

Why does the eastern rail line break down weekly, but fares never stop rising?

The new rail tunnel will link the western and eastern rail lines to one central line through London.

They damaged a section of track in Bihar state, severely disrupting the eastern rail network, senior officers said.

A section of track was damaged in Bihar state, derailing a train and disrupting the eastern rail network, a senior police officer said.

Some growers figured that they could still make money, even if their soybean plantings yield only 20 bushels per acre, an eastern rail broker said.