[lxgr]

Like asking people for their W-2 in the Holland tunnel? And who do you ask – the driver, the car's owner, the entity paying for the lease, the passenger, or all of them?

I agree, but I think this one would create incredible administrative overhead and still not even get close to 100%.

[voisin]

How about to use the congestion zone you need a transponder which you register for, and annually you update your information in the registration portal?