CarsSelling or buying a connected car: data and accounts to check
A guide to checking profiles, phones, connected services and digital ownership when a modern car changes hands, without assuming that a reset deletes everything.
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Technology
Technology brings together information for informed vehicle decisions. Start with the intended use and market, then check each guide’s sources and review date.
Where to start
3 articles
Cars
Rail & special vehiclesETCS in railways: what it is, how it works and the differences between Levels 1 and 2
ETCS is the part of ERTMS that brings signalling and automatic train protection into the cab. This guide explains its components, how movement authorities are transmitted and what distinguishes Levels 1 and 2.
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Rail & special vehiclesCatenary-free trains: when to choose battery, hydrogen or modern diesel
Non-electrified regional lines do not have a single technological answer: battery, hydrogen, hybrids and modern diesel depend on the route, the energy and the available infrastructure.
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