The van had slowed as the traffic hit the vegetable market.

I screamed for it to stop, and the van slowed.

The van pulled through the gate, made a wide right-hand turn, and then slowed to a stop.

Then, after a long run down a straight stretch, the van slowed sharply and he felt it turning to the right.

It passed the yellow van parked near the corner, then slowed.

He was thankful when the van slowed down and the driver yelled to him.

The van slowed to a stop because of the traffic.

The way the van slowed seems to indicate that the crew was overcome quickly, although not immediately.

The van slowed, and again Lepidopt heard the turn signal.

The van slowed and then stopped on the shoulder.