Vehicle Speed Control

Vehicle Speed Control sets the top speed of whole vehicle categories with one slider each. Every slider starts on Vanilla (unchanged).

Tested with game build 40420 (08 October 2026): works, no changes needed.

Categories: steam, diesel and electric locomotives; passenger and cargo wagons; diesel and electric multiple units; passenger and cargo trams; buses; trucks; small and big ships; planes; helicopters.

Rules:

• Horse-powered vehicles always keep their vanilla speed.
• Multiple units are changed as a whole set, so all cars run at the same speed.
• Single railcars follow the multiple unit sliders.
• Tram locomotives follow the Cargo trams slider, together with the cargo wagons they pull.
• Steam multiple units and vehicles that cannot be classified keep their vanilla speed.
• Decorative cars without engine or cargo (for example the fake locomotives of the Siemens Vectron mod) are set to 500 km/h as soon as any train slider is used, so they never slow a train down.
• Works with modded vehicles.
• Compatible with 'Speed Limit for Trains' by dylan67: its speed limiter wagons keep their own speed.

Notes: engine power still decides how fast a train can really accelerate, and track and road speed limits still apply. Very slow planes may have trouble taking off.

Tested before release with all vanilla vehicles, the Deluxe Upgrade Pack and modded vehicles (Siemens Vectron basic package, Vectron Repaint Pack 2 - SBB, SBB Einheitswagen II - Vanilla Repaints).

The mod writes a short report to stdout.txt. Set 'Detailed log' to On to list every changed vehicle.

By BeOnHedge & Brainy.

Inspired by the Transport Fever 2 mod 'Smart Top Speed Customizer' by AksLrs.