'Not careless'.
Does that mean that the idiot driving ahead of me on I70 who slammed on his breaks at 75mph last Sunday because 'he needed to pick up the phone' could get a ticket?
Will that ticket pay for my funeral?
I am glad that I have the golden rule that everybody but me on the road is an idiot so I always keep plenty of distance between vehicles.
I surely wish it was legal to shoot bastards like that.