Like some of the other comments already mentioned, its indeed on a per distance basis. Also traffic accidents are far more deathly if you're walking basically naked from a safety perspective vs protected by a well designed mass of metal.

When a car and a human collide, it's not the driver that's likely to die.

I got my stats from https://en.wikipedia.org/wiki/Micromort which shows walking approx 12 times as dangerous per mile.

On a time basis walking would be less dangerous than driving I reckon. Walking also has other health benefits.

I mentioned it specifically, because walking to the store instead of driving for safety reasons would not be a smart choice. Doing some daily walking in a park likely would be a smart choice though.