coming and going of people and horses; passage of people and horses
A somewhat literary or descriptive term for a scene where people and horses are moving back and forth, often evoking a busy road or historical setting.
The highway saw an endless stream of people and horses coming and going.
In the old post towns, there was a bustle of people and horses coming and going.
往来 is a more general term for coming and going, traffic, or a road. 人馬往来 specifically emphasizes the movement of both people and horses.
Compound of 人馬 (people and horses) and 往来 (coming and going, traffic). The exact historical derivation is uncertain, but the word is conventionally associated with scenes of pre-modern travel.