Septa Route 10 Trolley Collision

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Septa Route 10 Trolley Collision

Postby 34thStreet » Wed Jan 04, 2017 1:59 pm

Bad day today for public transit, first the LIRR derailment, now a Septa Route 10 trolley collision in West Philly, looks like 38th and Lancaster. http://www.nbcphiladelphia.com/news/loc ... 73105.html

One rear ended the other, this begs the question I thought they have some sort of ATC that keeps them from getting too close to each other? I know from riding them that they have a fairly aggressive overspeed warning, which I also thought was to prevent this kind of collision from happening. I could be wrong about that. I have seen them get fairly close headways sometimes, but I wonder what caused this.
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Re: Septa Route 10 Trolley Collision

Postby ekt8750 » Wed Jan 04, 2017 2:23 pm

34thStreet wrote:Bad day today for public transit, first the LIRR derailment, now a Septa Route 10 trolley collision in West Philly, looks like 38th and Lancaster. http://www.nbcphiladelphia.com/news/loc ... 73105.html

One rear ended the other, this begs the question I thought they have some sort of ATC that keeps them from getting too close to each other? I know from riding them that they have a fairly aggressive overspeed warning, which I also thought was to prevent this kind of collision from happening. I could be wrong about that. I have seen them get fairly close headways sometimes, but I wonder what caused this.


The trolleys are equipped with a CBTC system and that's only in place in the subway tunnel. While on the surface streets, they have to adhere to regular traffic laws.
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Re: Septa Route 10 Trolley Collision

Postby SCB2525 » Mon Jan 09, 2017 12:20 am

I don't see how this is any bigger a deal than if a bus rear-ended another bus.

If the NTSB recommends CBTC on the street, the climate of rail safety will have officially gotten ludicrous.
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Re: Septa Route 10 Trolley Collision

Postby JeffK » Mon Jan 09, 2017 12:17 pm

SCB2525 wrote:I don't see how this is any bigger a deal than if a bus rear-ended another bus.
I agree. Overspeed indicators wouldn't have helped in this case. But I wonder if the new low-floors (if & when they arrive) might have some of the same collision-avoidance technology that's becoming standard on cars.

If the NTSB recommends CBTC on the street, the climate of rail safety will have officially gotten ludicrous.
True, that! (but see prev. paragraph)
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Re: Septa Route 10 Trolley Collision

Postby AC4619 » Sat Jan 28, 2017 1:30 am

JeffK wrote:
SCB2525 wrote:I don't see how this is any bigger a deal than if a bus rear-ended another bus.
I agree. Overspeed indicators wouldn't have helped in this case. But I wonder if the new low-floors (if & when they arrive) might have some of the same collision-avoidance technology that's becoming standard on cars.

If the NTSB recommends CBTC on the street, the climate of rail safety will have officially gotten ludicrous.
True, that! (but see prev. paragraph)


Perhaps ludicrous in our current human-driving society. But, assuming self driving vehicles eventually take over...that technology could actually work very well. Or terribly given technical incompatibility BUT the potential for success is there.
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Re: Septa Route 10 Trolley Collision

Postby JeffK » Sat Jan 28, 2017 4:02 pm

I wasn't even thinking of self-driving vehicles yet, just some of the avoidance tech that's pushing its way down to mid-price cars. E.g. radar-based front and rear obstacle detection that issues a warning and applies the brakes if it senses a possible collision.
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