Quetta is safe else the terrorist strikes. If you have not traveled in that N50 section before travel only during day light,
Lahore, Jhang, Bhakkar, D I Khan, Zhob, Qila Saifullah, Muslim Bagh, Kuchlak, Quetta. if you start 4 am from lahore and take the N50 route comfortably you can reach quetta by 6 pm. Road condition is perfect however security check points are mandatory stop, keep you cnic along with car ownership papers. - N-50 is the highway
The punjab hate belt is along coastal balochistan infested by enemy funded rouge elements.