I've always wondered what would happen if this happened. Thanks for the clear, concise video.

@tinwas_taken

10 ай бұрын

They can also continue driving anyways.

@noah_aviation8845

6 ай бұрын

​@@tinwas_takenif they have a generator

@Negev-Israel

3 ай бұрын

It has on board battery

They have batteries now to keep it pushing so the operator can get into a safe zone to reconnect the poles. Back in the day that wasn’t the case. My mom drove the 22 and trust me if I rode with her and I would get off and make sure she was safe while connecting

This video shows why, if for no other reason than operator safety, newer trolley busses have a battery sufficient to pull clear of an intersection when stuff like this happens. They allow the operator to stop the bus somewhere NOT in the middle of an intersection before they get out to reconnect the buss to the trolley wires! I don't know the details, but I think the newer SF Muni Trolley busses have a battery sufficient to drive a few blocks (at least) - in order to detour around anything (such as construction or an accident) that keeps them away from the overhead wires.

@MartinKozub

10 ай бұрын

I think the previous Škoda 14/15 TrSF ones also had a battery to allow for this kind of off-wire manipulation: en.wikipedia.org/wiki/Trolleybuses_in_San_Francisco#Electric_Transit,_Inc. Batteries are not new anyway. In 1940s they were quite usual in trolleybuses manufactured in Switzerland. What has changed though is the capacity. It was historically not aimed for semi-autonomous operation like nowadays were cities can expand the network without building overhead wires to sections with less frequent operation where batteries make more sense.

@Jeff-uj8xi

9 ай бұрын

They can go several miles off wire. The batteries charge while the coach is on the trolley wires.

@AznIntegra521

7 ай бұрын

The batteries in the xcelsiors can go for 1 trips from one end of the terminal to the other.

@robfriedrich2822

6 ай бұрын

In a case like this it's enough when battery covers about half a mile.

@vulc1

10 күн бұрын

Strange when someone calls the bus driver an "operator"

That’s actually nothing compared to what happened if it was done on the old 7000-series. Crazy amount of sparks and completely disabled the bus.

Switch didnt throw even though operator had his blinker on to trigger it....looks like the negative tap is off so switch didnt have the electricity to throw

Driving safely all the time and focus to driving ....Nice sharing ❤

I hoped you would show, how the driver reconnect the poles.

It appears the angle of the poles were the problem the selectric pins on that switch though the poles were taking the straight wire there for the dewirement

How did the bus keep moving? does it have battery back ups? is it a dual mode diesel? as far as I know here in Boston when our trolley busses got off the wires, they had to be pushed (not the sliver line those were dual mode with diesel)

@micksam7

10 ай бұрын

This model trolley bus has a small traction battery to store and use regenerative braking power. It is also used to detach from the overhead lines to get around accidents, construction, or in cases like this were it becomes detached. The operator needs to stop the bus and fully retract the trolley poles before they can use it.

@AznIntegra521

7 ай бұрын

It has a battery backup

@YoLikeRyder

3 ай бұрын

Battery backups. The T was too cheap to pay for those when they bought their trolley buses. All new trolley buses have them now.

Looks nice 😊

Tbus drivers in other cities: *I gotta go reconnect poles fast!* American tbus drivers: *Uh oh, I've dewired.. well, I'm gonna drive on battery*

How do these switches work?

How do they control what switch they go on?

@kilodeltaeight

10 ай бұрын

At 0:14, if you look above the “passenger side” wire before the actual switches work, you’ll see a second wire above the current wire: this is an antenna. Depending on what turn signal is being used, a signal is sent via the trolly poles that in turn tells the switches what direction to send the poles. In addition, there’s usually an override switch in the driver’s position they can manually set to compensate for situations where they need to signal one direction while the poles go a different direction, or similar. In this case, the driver either didn’t signal at the right moment, or had bumped that override switch without realizing it and thus the poles went on the wrong path.

@gregl1927

10 ай бұрын

@@kilodeltaeight Thanks this is really interesting! I used to drive buses so I've always wondered how trackless trolleys work. My city (Boston) unfortunately just got rid of it's trackless trolley systems. I think for ours it was not remote control--I think the bus had to coast over the switches and pull it a certain way. It was labeled a "cut out".

@TheWeavingBagel

2 ай бұрын

@@kilodeltaeight When you say "signal sent via the trolley poles." Is this being communicated with the switch wirelessly? Like there is another antenna in the trolley poles sending a signal?

Oh no! Anyway.

you can totally get rid of those expensive electrical junctions if its got a freaking battery on the bus in-between intersections.

@MartinKozub

10 ай бұрын

No you can't. A) batteries are also expensive and even less durable than the switches, B) it takes time to disconnect from and reconnect to the wires even if this could have been automated, so it would be inevitably slowing the traffic/ride, C) with the wires in also non-battery equipped buses can operate in that section and not every trolleybus has to drag the additional weight of the batteries. Meaning it is most efficient if only a subset of buses have them and that subset is used for lines which are not 100% covered by wires. D) you can still do vintage rides with old vehicles on the network if it is kept wired in its full scope.

@treehugger1640

9 ай бұрын

@@MartinKozub I've heard no you can't my whole life. Guess who I've proved wrong every single time ? It's only a matter of time before it's a full battery powered bus.

@MartinKozub

9 ай бұрын

​@@treehugger1640 That is quite likely, yes. But not yet. There are even new trolleybus systems emerging worldwide because batteries have their own problems and limits. The additional space they occupy, the additional weight meaning higher power consumption, the power losses related to the storing of energy, the overheating problems and the additional danger of fire. Wires are not the ultimate solution to everything and they have their own problems too, however they are a proven technology.

@Gfynbcyiokbg8710

7 ай бұрын

​@@MartinKozub Fully battery electric buses are already very extensively used in some places. In Shenzhen all 16 000 buses have been battery electric for 5 years now and London and Moscow both have over 1000 each

@MartinKozub

7 ай бұрын

@@Gfynbcyiokbg8710 Moscow was a political decision made without any reasoning, similarly to Wellington for instance. And both were/are accompanied with high costs and extremely low reliability and the need to use more standard buses with combustion engines. As far as Shenzhen goes I have not been observing that one so no idea.

This seems like such a stupid way to set up your transit. They're already on wheels, why do they need all that junk hanging overhead?

@Junkob101

10 ай бұрын

So that the vehicles can be run fully electric

@Scoopta

10 ай бұрын

It's for power...it's an electric bus. Alternative would be battery buses which some places do but trolley buses have been around for a lot longer.

@dinostudios6579

10 ай бұрын

Last time I checked rubber wheels don’t conduct electricity

@Junkob101

10 ай бұрын

@@dinostudios6579 last time I checked, the wheels don't sit overhead

@danishnaufal5432

10 ай бұрын

what’s gonna power the wheels? wind?

What an insanely idiotic stupid system: having a massively restrictive system of overhead electrified wires to power trams/trains/trolleys, that you have to follow all the time.

@robfriedrich2822

6 ай бұрын

Yes, you never use stationary electricity, isn't it? Toxic batteries are the best...

@dewrow

6 ай бұрын

Lmao cry

@kluculda

5 ай бұрын

If you are running often, wires are the best. Not expensive and have more power than diesel motor or batteries.