One mile travelled by one train, as a unit of traffic.
More example sentences
- After a 20 per cent growth in train miles since 1995, many parts of the network are full - though passenger numbers are still growing.
- Our hero took his chance and legged it, grabbing his coat and case and jumping train miles from home.
- In the immediate aftermath of the crash, the Health and Safety Executive wrote, ‘Rail breaks on the infrastructure rose from 2.75 to 3.31 per million train miles.’