Hot Student Stories

What Definition of up and down train?

Theresa Perry

in Studying

1 answer

1 answer

Annie Barnes on February 10, 2018

The words "up" and "down" refers to the difference in the average of the RLs of the two from the station. For example, if a train travels between stations "a" and "B" and the average of RL is more than the average of the RL of B, then a train travels from a to b is referred to BELOW and the train that travels from B to a with respect to SAFETY.

Add you answer