![On track automatic warning system equipment that forms part of the UK railway signalling safety systems Stock Photo - Alamy On track automatic warning system equipment that forms part of the UK railway signalling safety systems Stock Photo - Alamy](https://l450v.alamy.com/450v/dh8xye/automatic-warning-system-on-rail-tracks-in-uk-railway-station-at-platforms-dh8xye.jpg)
On track automatic warning system equipment that forms part of the UK railway signalling safety systems Stock Photo - Alamy
![KMRC Skrifa - 3rd & 4th Rail Systems - Part 3 - Conductor Rail Accessories and other lineside details KMRC Skrifa - 3rd & 4th Rail Systems - Part 3 - Conductor Rail Accessories and other lineside details](https://www.kernowmodelrailcentre.com/Skrifa/SP_3rd_Rail/Figure_210.jpg)
KMRC Skrifa - 3rd & 4th Rail Systems - Part 3 - Conductor Rail Accessories and other lineside details
![Borders Railway on Twitter: "@mrmissm @BordersRailTV this is a automatic warning system (AWS) magnet. Warns driver on the approach to a signal or speed restriction." / Twitter Borders Railway on Twitter: "@mrmissm @BordersRailTV this is a automatic warning system (AWS) magnet. Warns driver on the approach to a signal or speed restriction." / Twitter](https://pbs.twimg.com/media/CE4X9KFXIAABN2-.jpg)
Borders Railway on Twitter: "@mrmissm @BordersRailTV this is a automatic warning system (AWS) magnet. Warns driver on the approach to a signal or speed restriction." / Twitter
![AWS magnet between the rails at Belair, manufactured by ML Engineering (Plymouth) Ltd - Wongm's Rail Gallery AWS magnet between the rails at Belair, manufactured by ML Engineering (Plymouth) Ltd - Wongm's Rail Gallery](http://railgallery.wongm.com/cache/adelaide-stations/E104_6837_595.jpg?cached=1627285762)
AWS magnet between the rails at Belair, manufactured by ML Engineering (Plymouth) Ltd - Wongm's Rail Gallery
![AWS, Automatic Warning System ramp housing a very strong magnet for initiating a brake application on passing trains until cancelled by the driver Stock Photo - Alamy AWS, Automatic Warning System ramp housing a very strong magnet for initiating a brake application on passing trains until cancelled by the driver Stock Photo - Alamy](https://c8.alamy.com/comp/JCAR3H/aws-automatic-warning-system-ramp-housing-a-very-strong-magnet-for-JCAR3H.jpg)