If I've misunderstood the documentation, please consider this to be a request for more specific documentation and a for way to read the braking_power of a car entity.
Steps to reproduce: Get in a car or tank and run the following snippet in the console. Modify the braking_power for the car and/or tank in base/prototypes/entity/entities.lua (or alter it the proper way, with a mod) and restart Factorio. Run the snippet again and notice that the value doesn't change.
Code: Select all
/c game.player.print(game.player.vehicle.prototype.braking_force)