noun
excess fare; additional fare for going past one's stop
Used in public transportation contexts when a passenger travels beyond the paid-for zone and must pay the difference.
乗り越し料金を精算機で支払った。
I paid the excess fare at the fare adjustment machine.
精算 refers to fare adjustment in general, while 乗り越し料金 specifically means the extra fare charged for going too far.
Compound of 乗り越し (のりこし, 'riding past') + 料金 (りょうきん, 'fare').