Position Light

Ah, combining a worse user experience with less reliable wheel assemblies.

Literally a thing in Brooklyn PCC cars.

In North America ride height is a mark of status.

Obligatory clip:

Amtrak PORTAL Bridge Re-Labeling The requirements of safety and signaling made railroads some of the first organizations to manage systems of unique identifiers and all thei...

The Position Light: Amtrak PORTAL Bridge Re-Labeling position-light.blogspot.com/2026/02/amtr... #PRR #PortalBridge #Interlocking

I mean to force merchant ships to run the gauntlet.

What did we do during the battle of the Atlantic?

03-08-02 CLASSIC PHOTOS: Perryville In the late summer of 2003 I was preparing for a move down to Maryland for grad school and on one of the trips I convinced my ride to pull b...

Jersey Mike's Rail Adventures: 03-08-02 CLASSIC PHOTOS: Perryville prr4ever.blogspot.com/2026/03/03-0... #PRR #InterlockingTower #PortRoad

At a high enough oil price they'll just get Aramco Insurance.

You see Russia having any problems staffing their shadow fleet?

At a certain price that tankers will just run the gauntlet.

It's a fairly early system and will probably need a full replacement with the new equipment. That's the big problem with CBTC, they only last 20 or so years before everything needs an update.

In the center city tunnel yeah. The system is not "safety critical" in that regard.

To answer your question I wasn't expecting this level of performance hit. Like SEPTA's PTC implementation slowed down the Regional Rail Division 3-4 minutes per trip. That's what I was expecting.

The specific way they implemented the CBTC was a choice that is independent of the form of signaling.

~2004 the center city tunnel CBTC overlay blew up service so badly they had to turn it off during rush hour. They eventually managed to fix it and one doesn't even know it's there.

Ah! Yeah SEPTA is still benefiting from the "power/coast" system, but operators are expected to be able stop short and use a switch iron.

SEPTA doesn't bother with a full stop likely because they have the infrastructure to quickly fix minor derailments and the trolley lines aren't in critical parts of the city.

That's one of the points I've heard, but the police also went on strike. Further analysis is needed, but either situation is worth publicity.

I'd like to read an Atlantic article about the relationship between disorder and serious crime.

I have other theories, but I wanted to hear from others about this.

You know the high crime era was a thing and if anything was going to change the faregates it should have been that. What was different then.

Did you read my post? Why was BART sketchier in 2022 than 1992?

Did the Assembly of Experts even meet?

To prevent fading?

BART used the clam shell gates during the highest crime period in history, but somehow managed to avoid the issues of the last 10 years. What were they doing then that they aren't doing now?

The pre CBTC performance. For some years they had to turn it off during rush hour.

The CCTT is so close I can't tell the difference, but that was an issue of separation, not speed restrictions.

Welcome to my stone driveway.

EVs gave automakers an excuse/incentive to add more electric based features, like door latches and power steering, and then also make them smart. EVs are also conflated with self driving because of Tesla.

I'm actually waiting for the next big thing in train control to be a computer vision system that self navigates and reads signs + wayside signals.