[k12sosse]

Because users on Waze report it to them for points

[Jeremy1026]

Apple Maps does have the ability to make the same reports, but its super buried so I doubt many people even know its possible, let alone where to go to do it.

[tim333]

Also, I'm not sure but if a road that normally has several cars a minute goes to zero cars in five minutes say, it's likely it's blocked.