Is approach release fail safe?

[nagaraju_dvv]

Hi guys,

An interesting debate on "approach release"......

We approach release the signals to reduce the train speeds to a reasonable extent. But.....

"Do you think approach releasing the signals is fail safe?"

Regards,
Saraswathi

Yes this could be the basis of a mod3 written question. In order to give enough scope for a 30 min answer then I think that I might word it:
Describe 3 situations in which the clearance of a signal is deliberately delayed until there is a train on its approach.
For each situation-
a) explain the rationale for imposing the control,
b) comment on any safety implications,
c) describe how any risks are mitigated.

Let's see some attempted answers to this.

Hi Saraswati

Please find attached document which may probably answer your question to some extent. I think it requires some more inputs (mainly from UK Main line front). Can somebody analyse this further?

Nagaraju