Помощник машиниста is an Android app that provides valuable information to train drivers and assistants. The app contains a comprehensive list of common malfunctions of the ED4M locomotive and instructions on how to respond to them. It also includes information on brakes and the PTÉ system, as well as instructions for non-standard situations.

The app is an excellent tool for train drivers and assistants who want to improve their knowledge and skills. It is easy to use and provides relevant information in a clear and concise manner. The app's developer, Petr Skvortsov, has done an excellent job of putting together a useful tool for train drivers and assistants.