Darbhanga,patna,gaya bus yehi exist krta hai ecr k liye....dhanbad naam ka ek division hai jo ki sabse zyada revenue ecr kp deta hai...wahan train dene ki baat aati hai delho,mumbai ya bangalore k liye to inko railway board ka bahana mil jata hai....i wish dhanbad is removed from ecr and transferred to ser or er