What is TfL rail line?

Related questions

1. Is TfL rail a Crossrail?
2. How much will the London Crossrail cost?
3. How long is the train ride from Paddington to Heathrow?
4. What was the original budget for Crossrail?
5. Who paid for Crossrail?
6. What TFL mean?
7. Can you use contactless on TfL rail?
8. Do you have to pay for TfL rail?
9. Who runs TfL?
10. Is Heathrow Express TfL rail?

Tags

1. #services
2. #known
3. #retired
4. #environs
5. #opens
6. #railway
7. #franchise
8. #crossrail
9. #service
10. #lines
11. #london
12. #stages
13. #autumn
14. #become
15. #elizabeth
16. #separate