Complex sentence: Power will be provided by the 25 kV AC overhead wires and use Alstom's Urbalis signalling system for Communications-Based Train Control (CBTC) to ensure a 100 second gap between each train.
Split into simpler sentences: Power will be provided by the 25 kV AC overhead wires. The trains will use Alstom's Urbalis signalling system for Communications-Based Train Control (CBTC) to maintain a 100 second gap between each train.