9 Signaling apparatus and instruments dedicated to predictive maintenance solutions of rolling stock and transportation infrastructure being part of rail vehicles, namely, vehicle locator and recovery devices programmed to use global positioning systems (GPS) and cellular telecommunications, vehicle breakdown warning lamps, wireless transceivers with collection and display technology for the status and tracking of all rail vehicles in local environments, and mechanical and electronic measuring machines for identifying and analyzing structural damage to rail vehicles and transportation infrastructure; Apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling the distribution or use of electricity, namely, apparatus and instruments being vehicle safety equipment in the nature of voltage monitors for measuring and controlling electric field parameters; Apparatus for recording, transmitting, reproducing and processing sound, images and data; Downloadable and recorded computer software for analyzing and diagnosing the condition of railway infrastructure equipment, rail vehicles and parts thereof, in particular, bodies, wheels, brake pads, pantograph contract strips, doors, antennas, and fixings; Blank digital recording and storage media and analog recording and storage media, namely, blank recordable CD-Rs and DVD-Rs; Mechanisms for coin-operated apparatus; Cash registers; Calculating machines; Computer hardware and computer peripherals; Fire extinguishers; All of the aforementioned goods for use with land vehicles, buses, coaches, autonomous electric vehicles and rail vehicles for transporting passengers and goods, railway rolling stock, locomotives, rail cars and self-propelled vehicles, high-speed and very high-speed rail vehicles, underground trains, automatic and non-automatic iron-wheeled rail vehicles and guided vehicles with pneumatic and other types of ground liaison, railway couplings, railway infrastructures, coatings, rails, and structural parts therefor; Smart meters being devices connected by computer or electronic means enabling guidance and orientation of people taking transport and validating their tickets, namely, electronic automatic ticket examination machines