Imagine you are playing a game and you have to get from one side of the room to the other side to win. However, there is a river in the middle of the room that you cannot simply walk over. So what do you do? You find a way to cross it, right? Well, that's essentially what Ford means in terms of driving.
A Ford, or a crossing, is a point where a road, trail, or pathway goes over a river or other body of water. It's a way to safely pass through the water without getting stuck or damaged.
In the olden days, before we had fancy bridges and tunnels, people and animals would have to cross rivers by either swimming or finding a shallow spot where they could walk across. However, this was really risky and not always safe. So, people started to build fords that had a hard surface, like rocks and stones or even logs, to make it easier to cross.
Eventually as technology progressed, people started to build bridges and other types of crossings, but Ford crossings are still used today in places where there is no need for a full-blown bridge.
So in short, a Ford or crossing is a way to get safely across a river or other waterway by using a special designated spot where you can walk, bike or drive over with your car without being submerged in water, or getting wash away from the current or floods.