August 2023: The FLEX EuroDual comes to life
The beginning of August marked the introduction of a second locomotive wearing the signature design. This is the Stadler EuroDual 2159 253 which FLEX Bahndienstleistungen is leasing from ELP (or European Loc Pool). As seen in the image below the design was specially edited to match the heavy-duty shape of the six-axle hybrid locomotive.
MARCH 2023: A NORTHRAIL SMARTRON IS THE FIRST ONE TO ENTER THE SCENE
OnTrack already had experience with making Siemens Smartron locomotives green (see the BDZ PP livery). But in 2022 a new project was started in collaboration with Railcolor Design for Flex Bahndienstleistungen and its Northrail-leased locomotive 192 059.
ABOUT THE DESIGN CONCEPT
Two directions and many paths to follow. Officially titled “Adern des Netzwerks” (or “The veins of the network” in English), the design refers to Flex’s specialisation: high-quality first/last mile operation at local hubs – interconnected by long-distance services.
REFRESHED FLEX LOGO INCLUDED
As part of the project, a more modern version of the Flex logo was conceived to match the striking identity of the locomotive.
The locomotive officially debuted in mid-March 2023 and marked the start of a series of livery designs that RailcolorOntrack will be developing for the German operator.

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