Systems that accomplish this task can make use of sliding contact shoes. For 10 points each:
[10m] Identify this general task that, among other things, allows for the use of EMUs. Overhead lines and third rail systems are commonly used to accomplish this task.
ANSWER: rail electrification [accept answers indicating trains or trams running on electric power]
[10e] In the absence of electrification, modern trains are usually powered with this type of liquid fuel due to its higher energy efficiency compared to gasoline.
ANSWER: diesel
[10h] This company’s Charger locomotive is primarily diesel-powered, but a variant capable of electric power was designed for use in New York in 2020. The electrified portion of Northeast Regional service uses this company’s Amtrak City Sprinter locomotive.
ANSWER: Siemens Mobility
<Liu, Other Academic>