Abbreviated term for Automatic Warning SystemA system that provides audible and visual warnings to the driver on the Approach To Signals, certain Level Crossings and Emergency, Temporary and certain Perman....
The site for Miniature and model signalling!
Abbreviated term for Automatic Warning SystemA system that provides audible and visual warnings to the driver on the Approach To Signals, certain Level Crossings and Emergency, Temporary and certain Perman....