Modern reporting worldwide really sucks. It's as if all reporters are retards, or unable to have insight as to what a statement suggests.
I infer that what is unsaid (and likely) is that women are not allowed to operate a motorcycle by themselves, no matter how they are dressed. It would be suicidal to do so riding sidesaddle. Perhaps I can become a zillionaire by inventing a motorcycle that is totally safe and efficacious to ride and maneuver sidesaddle!
Do you mean, you really can't figure out why the moslem chauvinist pigs passed this law?