4 ms·
Typically, the answer is overhead wires, which stay much cleaner. http://en.wikipedia.org/wiki/Trolleybus http://en.wikipedia.org/wiki/Trolleybus
by sbierwagen 13y ago
Typically, the answer is overhead wires, which stay much cleaner. http://en.wikipedia.org/wiki/Trolleybus http://en.wikipedia.org/wiki/Trolleybus