In addition to overspeeding drivers who exceed the permissible speed limit, other road zombies are drivers who break traffic rules, like driving with one hand, while speaking on the mobile phone.
Routinely two wheeler and car drivers are spotted speaking on their mobile phone while driving with a single hand. These drivers are aware of the fact that there is no one monitoring them, so they are free to try any stunt without being questioned, putting their life and the life of others in danger.
Usually most of these one handed drivers are young and can easily stop for some time to take the phone call, or speak to the person who called later as mobile phones have a missed call facility