From electricity to diesel and back again

in vehicles •  5 years ago 

Yesterday I found this fascinating old picture of Copenhagen trams in the Nørrebro depot - probably from around the late sixties.


The image is from This local newspaper article

The public transport in Copenhagen was for many, many years synonymous with the trams and the S-trains. The S-trains are still there and has been suplemented with a spiffy new metro with driverless trains. But in 1972 the trams had to go on pension and the modern diesel bus made its entry into the Copenhagen traffic.


A diesel bus from the late sixties of the kind that took over from the trams. Image by Leif Jørgensen CC-sa

Today the trams are remembered through old song like this one, Another tram and another girl always comes, but only old people have actually seen them in the streets.

Now with the 2025 goal of a CO2 neutral Copenhagen, this is reversed again. There are currently two experimental electric bus line that has proved successful and all buses will be replaced within the next years. They do not have wires though, but batteries and fast high voltage recharging. They should also be 3-4 times more energy efficient than regular buses and will make a lot less noise than diesel buses - especially when started.

The one I have seen most is line 3A that load at the Valby Park where I bike past it. It uses a pantograph to charge at the end of the line and the 300 kW charger can in less than three minutes swallow enough energy to travel the route at least twice.


Image is from an article in The Danish engineer periodical, Ingenøren.

Notice the little Danish flags :) They are used on festive days like the Queen’s birthday and such. When it was Gay pride parade they had one Danish flag and one rainbow flag. Makes the buses look like little toys.

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Those old trams look like the current ones in Blackpool!

OOOO! It works again!

I really like the 1922 design of these.

Some of the UK is still firmly embedded in the past. Some done purposefully to keep the 'charm'.

All that modern rubbish! A nice cuppa and curry is all we need.

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Trams have made a comeback in several UK cities. They ought to be a good way to move people around, but the infrastructure can be expensive initially.

They are building a tram rail in the northern Copenhagen suburbs, but modern trams are different from the old ones. The old ones simply rode in the streets like buses, while the new one have their own track lane (which is a good thing for security. There was lots of accidents with the old trams). Electric buses in Copenhagen looks like the ones we already know, so they won't make headlines. All the public vehicles from garbage trucks and excavators to small street sweeper are being replaced with electric ditto within the next couple of years.

Converting all these utility vehicles is a good first step and they can probably share charging facilities. There are hybrid and electric buses in London. Only about 1% fully electric so far. There ought to be a ban on new diesels.

It is necessary if they want to reach the co2 free goal for the Copenhagen, but I guess that it will happen in all big cities faster than we think. As the electricity grid is expanded and supplemented with cheap domestic energy from windmills and solar, it will me much cheaper, and both noise and particle pollution can be removed from this part of the traffic.