It's not the main one, as there's a big red button on the other side for that. I've never seen these used in my thousands of tram journeys in Nottingham, and it occurred to me I don't know what they do. I'll try to ask some of the drivers I know!Emergency stop, perhaps?
Unfortunately not! That's on the other side!Is the left one hazards lights maybe?
Ooh good point, I hadn't thought of that! I've never really had a tram fault luckily so wouldn't have seen that! I'd imagine that's probably the most likely answer, but I've asked a tram driver so I'll see what they say!Are they even buttons or just lights? The one on the left looks like a brake fault warning. Could the other one be the same for the sanders?
What a weird light, people may interpret it as S***!and the right hand one is the Speed Restriction indicator (e.g. a fault is restricting the speed)