Spot The Mistake!

I took this photograph the other night as I was walking home (excuse the shadow,) and it looks like a normal nighttime street scene, and you could be right - but are you?

But here is the same photo with my very small addition. How many people noticed this on the first photo? The one-way sign with the car pointing the wrong way! In all fairness, they’re not the first and won’t be the last!