Gertjan Baron

Loco and operator are already present in the database:
https://trainspo.com/model/5895/
https://trainspo.com/operator/1862/

Builder: CZ LOKO
Top speed: 60 km/h
Gauge: 1435 mm
UIC axles: Bo'
Length: 7,98 m
Weight: 36 t
Source: https://www.czloko.com/products/lokomotivy-1/effishunter-300-2.htm and https://www.czloko.cz/pool/czloko/upload/ES300_EN.pdf

Operator: Infrastruktura Železnice Srbije
Source: https://en.wikipedia.org/wiki/Serbian_Railways_Infrastructure

The KT4TMR is now present in the database:
https://trainspo.com/class/13007/

According to the webpage http://tramway.ertas.eu/tatra/138.php?lng=est the KT4TMR is a refurbished Tatra KT4D (https://trainspo.com/model/kt4d/)

This is an InRail class E191.1 locomotive: https://trainspo.com/class/10860/
LocoItalia is the rental company InRail hired this loco from.

Moderus Alfa HF 11 AC

Manufacturer: Modertrans Poznań
Top speed: 70 km/h
Gauge: 1435 mm
Length: 13.5 m
Width: 2.35 m
Height: 3.35 m
Weight: 16.5 t
Operator: Tramwaje Śląskie S.A.

Sources:
https://pl.wikipedia.org/wiki/Moderus_Alfa
https://www.tram-silesia.pl/

Moderus Alfa HF 11 AC

Manufacturer: Modertrans Poznań
Top speed: 70 km/h
Gauge: 1435 mm
Length: 13.5 m
Width: 2.35 m
Height: 3.35 m
Weight: 16.5 t
Operator: Tramwaje Śląskie S.A.

Sources:
https://pl.wikipedia.org/wiki/Moderus_Alfa
https://www.tram-silesia.pl/

Manufacturer: United Goninan
Number built: 9 (2004-2005)
Top speed: 193 km/h (120 mph)
Prime mover: Cummins
Gauge: 1435 mm

Source: https://en.wikipedia.org/wiki/Transwa_WDA/WDB/WDC_class

Operator: Transwa (https://trainspo.com/operator/960/)

Both type and operator are already in the database:

Type: Stadler Flirt 3 3/8 15kV (https://trainspo.com/model/5218/)
Operator: GAVD / Go-Ahead Verkehrsgesellschaft Deutschland GmbH (https://trainspo.com/operator/2675/

Build: Đuro Đaković (1968-1972)
Top speed: 50 km/h
UIC axles: B’B’
Gauge: 760 mm
Length: 11.6 m
Weight: 32 t
Source: https://de.wikipedia.org/wiki/J%C5%BD-Baureihe_740

Operator is RMU Banovići (http://www.rmub.ba/)

https://en.wikipedia.org/wiki/Seibu_001_series

This is the only info I could find:

Builder: RELCO Locomotives
Operator: Bay Area Rapid Transit (BART)

Source: http://www.bart.gov/about/projects/eqs/retrofit

https://trainspo.com/model/2418/
https://trainspo.com/operator/2528/

https://en.wikipedia.org/wiki/%C5%BDS_series_621

English Wikipedia page: https://en.wikipedia.org/wiki/MTV-82

Model: VarioLF2
Series: VarioLF https://trainspo.com/series/866
Build: Aliance TW 2008−2017 (32)
Top speed: 65 km/h
Capacity: 46 seats
Gauge: 1435 mm
Length: 22.6 m
Width: 2.48 m
Height: 3.18 m
Weight 31.5 t
Electric systems: 600 V DC
Operator: DPMK https://trainspo.com/operator/2086

Source: https://cs.wikipedia.org/wiki/VarioLF2