10-06-2009, 04:19 PM
I agree with Peter, this looks a bit thin. Cab radio has some further advantages: not least that the signaller can call the driver at any point along the route! Cab radio can also be used for many more things than an SPT: telemetry off the train, broadcast and group calls, shunting, etc. Reduced trackside equipment to maintain and avoidance of safety risks assoociated with maintenance. Cab radio tends to get used more promptly at red aspects, especially when its raining! - reducing delays.
We should make clear that the formal voice protocol must be used, in accordance with the rule book. This is an important safeguard in both SPT and radio systems.
We should make clear that the formal voice protocol must be used, in accordance with the rule book. This is an important safeguard in both SPT and radio systems.