Author Topic: PTC Glitches  (Read 363 times)

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John

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PTC Glitches
« on: March 30, 2012, 12:37:28 PM »
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http://www.cnbc.com/id/46806223

lans for a nationwide, state-of-the-art digital railroad safety system, inspired by a fatal crash in 2008, are meeting with resistance, due to a fierce debate over its effectiveness and business benefits.

Collision avoidance systems, known as positive train control, or PTC, have been on the drawing board for at least 30 years, but garnered new support in September 2008, when a Metrolink commuter train collided head-on with a Union Pacific freight train in the Chatsworth district of Los Angeles, killing 25 people and injuring at least 130 others.

Blazeman

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Re: PTC Glitches
« Reply #1 on: April 12, 2012, 01:19:40 PM »
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Some think it can create capacity by allowing shortening of headways between trains since the controls would keep them apart. The costs though are tremendous and the freight lines want to spread that out to shippers. But since it would be imposed on freight routes carrying toxic inhalation cars, some want only the TIH freight to carry the cost. Since PTC will cost billions and TIH traffic is .75% of the RR mix, do the math and calculate the cost of a chlorine car going to your local water treatment plant.

Then each RR could use a different system, so compatability among them is challenged.

Since this is government mandated, but not funded, the transit authorities will be in a bind to come up something that won't break the bank.

Intention here was very good. Implementation not as simple. All due to one guy smoking pot and another on the phone instead of both being alert and fit for duty.