There's a useful illustrated page here on Russian electric locos
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I don't believe Russian locos each have a specific driver, but changing locos with each shift of them is more common, keeping them within their division. This is of course quite different to crossing the USA or Canada, where through trains have long used the same power set throughout, over several days, with the diesels being refuelled in situ at the head of the train periodically.
the big Russian electrics all look very similar!
Not helped by many of the types over time having been built with separate versions for 3Kv DC and 25Kv AC, different class numbers but using the same bodyshells. The Trans-Siberian is basically DC west of Mariinsk and AC east of there. For each of the loco types there are commonly different livery variations in use, which I have always thought reflected the division it belonged to.
Soviet-era passenger locos (and for the decade or more after Perestroika when none were acquired) were all built in Czechoslovakia by Skoda, this is what class ChS (ЧС in Cyrillic) stands for, there were different body styles (both AC and DC) but they have a certain high-set cab similarity. Most are still around.
Can't say that I know the ID of that second one, but they look cool too.
That's an EP1M (ЭП1М in Cyrillic), the current passenger type in production with a single-piece windscreen (great styling idea, until you see the cost of replacing one when broken ...), built at Novocherkassk works, near Rostov, the first non Czech-built passenger loco since probably WW2 EP1 = Electric Passenger design 1; Russian classes are pretty simple. The original EP1 was pretty much in the body of the electric freight loco, of which Novo had built thousands over many years, the M variant has a new body and cab. It's not unknown for Russian types to change cab styles radically, the old long-running suburban passenger "Elektrichka" with the 1950s space-rocket classical front profile later got replaced by something a lot flatter and plainer.
The big high-up roof mountings on Russian electric locos are winterisation equipment, hopefully (but not always) beyond the snow!