picture taken from http://news.okezone.com/read/2010/12/02/338/399216/sanksi-tilang-pengemudi-pakai-hp-digenjot
Yeah, it is annoying to see how people really into their handphone at anywhere without realizing the situation around them. Let us think about it, how in the heck the driver able to concentrate while driving if one of his or her hands busy with the handphone? I humbly think that using handsfree will give the same result... As the driver would surely more concentrate on the conversation rather than pay attention to the road.
I often saw many drivers of public transportations busy chatting, seducing, get angry with whoever through their handphone. While we the passengers starting to get itchy as we were worried that the vehicle will end up in the ditch... I understand if there is any emergency calls or once in a while pick up a call and talk for a while. But after more than a few minutes..., I would think does the driver want to find an earnest living or just want to have a chit chat?
By the way, the link about the regulation on traffic is here but unfortunately is in Indonesia... (the exact rule located on page 130 section 283)