I got some slang expressions for this game.

[metrolord]

Bad mark: drive with 10 absolut limit
Tunnel is a knife: drive RR-DDM on some metro tunnel with overhead wires
Traffic jam: sleep when playing activity

[brozma]

Well let's add nicknames for vehicles which came after 12th of may 2019

NS ICM = Koploper (Dutch for [maybe] "Headhole." Official nickname by NS)
= Sloth (It accelerates slowly)

NS 300 = Sik (Dutch for "Goat." Official nickname by NS)
= Tractor (When idling, it sounds like tractor)

NS DDM = City elephant rip off (Looks like a middle carriage of ČD 471 [City Elephant] unit)

NS TRAXX = Universal locomotive (This locomotive can be used for passenger and cargo transport and it can handle most of the traction voltages in Europe).

NS ICRmh = Helper (It helps with reversing the train)

Class 230 = Diesel D78 (It was made out of old D78 units)

Class 378 = Foreign Hybrid (It's a hybrid train, but it isn't dutch)
= S-Bahn Impostor (The network, where is this unit operating is completely similiar with german S-Bahn system)
= Banshee (The sound, which unit makes at high speeds, is sometimes very uncomfortable, even it's a good candidate for earrapes)
= Osprey (When going at maximum speed, the sound of the unit resembles a sound of Bell Boeing V-22 Osprey, when the aircraft has VTOL mode active)

Tunnel auto train = Channel tunnel ripoff (It was completely inspired by Channel Tunnel)

Citadis 302 Madrid = Slavic tram (It has colors blue, red and white, which are main colors of slavic countries)

Citadis 302 Reims = Ground licker 302 (The shoes for APS rail looks like a pair of tongues, so it looks like, the tram is "licking" the ground)

Citadis 302 and 402 Lyon = Nurse (The design looks a bit feministic and it's white)

Citadis 402 Grenoble = Jail tram (The doors looks like a iron bars used in jail)

Citadis 402 Tours = Ground licker 402 (Same reason as Citadis 302 Reims)
= Future tram (The design looks futuristic)

Citadis 402 Paris = Smiley (The lower fram of the windshield is shaped like a smile)

CC72000 Class locomotive = Sewing machine (When idling, the locomotive sounds like a sewing machine working)

LU2009 = Ferret (Looks small and long, thus resembling ferret)

[iamhankhamTS]

I guess I can add the expression I'm using a lot

Route Editor = Valuable Tools

They should not be touched by anyone except the devs as they're highly powerful and complicated. Anyone who asks for such powerful tools should be prosecuted by law. Normal punishment is 10 months mess room ban and 2 years community service (cleaning up the metro stock)

[Sgt_DeBones]

Anyone who asks for such powerful tools should be prosecuted by law.

Prosecutor Miles Edgeworth at your service.

(I need to chill)