>Eddie, there is a problem if you get tripped when travelling at or under the
>speed limit and you have complete control of your train.
><<<<Speed proving has been existence in Sydney since the Underground was
>built in the 1920's.>>>>>
>Really?, the earliest reference I can find about speed proving by the society
>of British Signal Engineers, (where Australia got all of its signalling
>practices) is mid '50's.
I Don't know where it originated, but timed signalling, to enforce
speeds, was in US Practice (transit subway only?) by ca 1920.
thanks
dave pierson |the facts, as accurately as i can manage,
Digital Equipment Corporation |the opinions, my own.
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"He has read everything, and, to his credit, written nothing." A J Raffles
"....the net of a million lies...." Anon