Google maps is my go to app for traffic updates in Pindi Islamabad.......i dont rely on traffic police anymore either to know which area is open or blocked.
Im sure if ur display unit is running on android and it can work with a viable 3g/LTE or wifi connection then google maps can be easily used.
The only doubtful thing is the non availability of GPS. As google maps pops up the question box of turning your location on or not. Thats the only thing which could, in my naakis raye, hinder its function in the display unit.