Trains and cars, being electrical, gas or gas, will remain the main transportation means in the 21st century.
In addition, infrastructure is extremely costly to build, extremely spread out over the territory, such as railways, and induces very high (unplanned) maintenance costs.
Rail and train infrastructure monitoring is today often limited to a few dedicated inspection trains that are slower than commercial trains, run during limited times, and focus on specific lines. This leads to infrequent monitoring, and undetected costly issues that arise between inspections on the vast rail network. The ideal solution for railways and operators, rather than infrequent inspections, is a real-time full network health monitoring system.