There is an ulterior motive here. If you don't show, you get a bench warrant out for your arrest.
Youtube has several lines of videos that feature cops stopping people for traffic violations and then discovering that the driver or passenger has a bench warrant. The results are often a struggle to arrest the subject and a colorful display of sociopathy. 'No bail' ensures that this line of videos will continue to be in plentiful supply.
There you go. And it helps to keep “On Patrol Live” on the air. Every idiot they stop is either smoking dope or has a warrant.