[porkbeer]

The visual pollution of signs, cameras, vans, and vandalism has increased as a direct result, as are costs for maintanice, and constant replacement of said cameras and tracking systems. It really seems more like a tax on the poor, and an attempt at social control rather than an ecological concern, based upon its implementation. To call it unpopular would greatly undersell common sentiment. Google ulez blade runners for some interesting takes.

[beardyw]

I live on the edge of the zone and have never even noticed the cameras. The replacements are required due to vandals. It is done principally to improve air quality for residents, not ecology. It is unpopular amongst a small but vocal part of the population who care little for the lives of others.

[zeristor]

I guess ULEZ equipment could be removed once the last polluting vehicles are off the roads, so maybe not that long.

[jaggs]

Not really a tax on the poor, any more than banning cheap plastic straws. We are, unfortunately, in a climate crisis and all the C40 cities of the world have agreed to take action to mitigate the problem.

It's not perfect, but the alternative is to let emissions continue to rise and contribute to increased global warming. It's a tricky decision.