ИСИ РФ Инструкция по сигнализации is a free Android application developed by DSc under the category of Education & Reference and subcategory of Books. This lightweight and user-friendly handbook is designed to provide a convenient reference for both work and study. The application includes all sections of the Instruction on Signaling, enabling users to access it at any time. It is an offline application that is always ready to use, and it even offers all three instructions in one application.

The app is easy to navigate and use, and it is available for free on the Google Play Store. It is a great resource for those who need to refer to the Instruction on Signaling frequently and want a portable and accessible version. However, the app does not offer any additional features or content beyond the Instruction on Signaling. Overall, ИСИ РФ Инструкция по сигнализации is a useful and practical tool for those who need to consult the Instruction on Signaling regularly.