Why doesn't the MTA use Trolleybuses?
Especially since trolleybuses and battery electric buses (including their infrastructure costs) are generally equal in costs. Only that trolleybuses are more reliable and energy efficient, since they continuous draw power from dual overhead/catenary wires, which also charges a small onboard battery on the trolleybus that allows it run for a few miles in an area without overhead wiring or if needs to go off course to due to an emergency or roadblock of some sort. Troleybuses have also been around for the longest time so it's a proven technology that works where it has been applied as a opposed to BEBs.