At city speeds, pollution from tire/brake wear is not a function of speed. It's a function of friction (acceleration/deceleration and vehicle mass), which has n

At city speeds, pollution from tire/brake wear is not a function of speed. It's a function of friction (acceleration/deceleration and vehicle mass), which has no posted limits or camera enforcement. The closest thing would be if a cop happens to hear you burn out and cite reckless driving, but I'm not even talking about that level of acceleration here.