The second pantograph is for the retrofitted air-conditioning.

Note the huge plastic bogie housings spread out taking up floor space in the Siemens Combino Plus with just a single-width seat on each and plenty of bare plastic unusable either by seated passengers or by standees!

There is also a comment that an extra platform is fitted on the approach to some of those stub termini so that passengers can alight without having to wait for one of the terminus tracks to clear. One of my Hungarian friends told me some years ago that this was an ongoing problem. Since then, they've obviously started fitting the extra platform. As can be seen in the film, termini do not always have more space beyond which prevents them applying the Melbourne solution of running trams through.

Tony P
---InTramsDownUnder@..., <gregsutherland@...> wrote :

https://www.youtube.com/watch?v=ofpozePl1cc https://www.youtube.com/watch?v=ofpozePl1cc
See the examples midway through this video.
Note the two pantographs!
Length is 56 metres for the CAF version

https://welovebudapest.com/budapest.and.hungary/budapest.now.has.the.world.s.longest.tram https://welovebudapest.com/budapest.and.hungary/budapest.now.has.the.world.s.longest.tram
(note also the grass track)
Length is 53.99 metres for the Siemens version

https://www.mobility.siemens.com/mobility/global/SiteCollectionDocuments/en/rail-solutions/trams-and-light-rail/combino-plus-budapest-en.pdf https://www.mobility.siemens.com/mobility/global/SiteCollectionDocuments/en/rail-solutions/trams-and-light-rail/combino-plus-budapest-en.pdf

These cars are multi-section, 100% low floor with no internal steps.
Designed for operation with a high passenger volume of about 10,000 persons per hour and per direction.
Budapest Transport Ltd. operates the trams in peak hours at two minute intervals. To ensure quick and convenient passenger flows eight double-leaf doors on each side with a clear width of 1,300 mm and spread over the whole length of the tramcar.