andrewprice, 3 months ago @partim Historically, I think the bell on a "clear" aspect was linked to signal repetition in fog, and the requirement that the driver should know exactly where he was at all times (the old arguments of "route" vs "speed" signalling)
@partim Historically, I think the bell on a "clear" aspect was linked to signal repetition in fog, and the requirement that the driver should know exactly where he was at all times (the old arguments of "route" vs "speed" signalling)