That depends on what they’re trying to address. If the issue is primarily the presence of the vehicles themselves, it makes sense that larger vehicles take mor

That depends on what they’re trying to address. If the issue is primarily the presence of the vehicles themselves, it makes sense that larger vehicles take more space and cause more congestion. If “congestion” also factors in pedestrians, then those larger vehicles are increasing congestion at a higher rate than smaller vehicles, both in terms of space taken by the vehicle, and number of humans entering the area. I get what you’re saying, but I think there are a number of ways to make it make sense depending on what behavior they’re trying to alter.