![Train Protection and Warning System and Automatic Warning System](https://d27wgn5g4t3wja.cloudfront.net/img/9e9686d5-1422-08df-aaa0-ba249bcf09ac/300983.png)
Train Protection and Warning System and Automatic Warning System
TPWS and AWS - Mors Smitt Group
The current Network Rail UK protection systems are TPWS and AWS. The functionality of both systems is combined in a single system, generally referred to as TPWS. TPWS comprises of OSS (Overspeed Sensor System) and TSS (Train Stop System).