Yes, IF the signal if fitted. But under the current design requirements, the vast majority of signals not at junctions are normally not fitted with TPWS.
This always troubles me especially when knowing how many signals are not fitted with TPWS.
AWS has no control over the speed of the train and it allows rear-end collisions like the Loversall Carr Junction crash in Doncaster (RAIB Report 08/2023).
The report actually points out that even if the signal was fitted with TPWS, the collision would have still occurred.
A continuous supervision of speed will be necessary to avoid the accident. Well, it means we need ATP. It can be an intermittent one, it can be ETCS Level 2, it can be a moving block CBTC.
I am disappointed that the risk of rear-end collisions like this is usually dismissed.