- 16,023
- 7,564
http://www.cnn.com/2008/US/09/15/train.collision/index.html
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lisab said:It's hard to believe that the safety of all the passengers depends on one guy noticing one light. What if he has a medical emergency...or even something not that serious, like a fit of sneezes?
Is this how all trains in the US run...with no "plan B" if the engineer messes up? Yikes!
The NTSB for decades has recommended collision-avoidance devices for corridors where passenger and freight trains use the same track. Railroads say the technology costs too much and isn't reliable.
A story a few days ago indicated that the teens had somehow befriended the engineering, and they had asked questions about train operations and so on. I knew some engineers when I was younger, but I'd never would interfere with the operation of a train.Evo said:How did these teenagers get this "engineer's" cell phone number? How old was this engineer?
mgb_phys said:If it's anything like the UK. A warning system was invented for Brunel's Great Western Railway and first fitted in 1906, it sounds an alarm and puts on the brakes if you pass a red signal - it became mandatory after a bad accident in 1997!
91 years is a pretty quick response for British Rail.
I think I read though they went for the cheaper system (TPWS) which doesn't work for trains traveling faster than 70 MPH as opposed to the more expensive (ATP) system which works for trains traveling up to 200 MPH.mgb_phys said:If it's anything like the UK. A warning system was invented for Brunel's Great Western Railway and first fitted in 1906, it sounds an alarm and puts on the brakes if you pass a red signal - it became mandatory after a bad accident in 1997!
91 years is a pretty quick response for British Rail.
The train was going 42 MPH.Art said:I think I read though they went for the cheaper system (TPWS) which doesn't work for trains traveling faster than 70 MPH as opposed to the more expensive (ATP) system which works for trains traveling up to 200 MPH.
I wasn't commenting on this specific instance just that the UK system is not entirely foolproof but certainly a hell of a lot better than having none.Evo said:The train was going 42 MPH.
Before the UK introduced their fail-safe system a report found trains were running 600 red lights a year which is pretty scary.edward said:There is a mix and match of overhead signal bridges, track side signal s, and semaphores used in this country. Different companies use different signals.
I have a friend who retired from CSX a few years ago. He was an operating engineer. His biggest gripe was the mix of signals and how they varied. It is not unusual to run on a rail line owned by another company. There are a lot more than just stop or go signals.
Below is just a sample.
http://modratec.com/mud_sig02.php
lisab said:It's hard to believe that the safety of all the passengers depends on one guy noticing one light.