godan verb (-ru), intransitive verb
be about to get on; be about to board
Describes the moment just before boarding a vehicle such as a train or bus. Often used with ～とする or ～ところ.
電車に乗りかかったところで、忘れ物に気づいた。
Just as I was about to get on the train, I realized I had forgotten something.
godan verb (-ru), intransitive verb
Indicates beginning an action, often with a sense of momentum or commitment. Commonly used with verbs in the ～かける form.
仕事に乗りかかると、時間を忘れてしまう。
Once I set about my work, I lose track of time.
godan verb (-ru), intransitive verb
Physical sense of moving onto or leaning over something. Less common than the boarding sense.
塀に乗りかかって隣の庭をのぞいた。
I leaned over the fence and peeked into the neighbor's garden.