Pillar 01 · Abu Dhabi city buses
The first pillar is the city network of Abu Dhabi — the white-and-red-livered buses that knit Abu Dhabi island, Reem, Saadiyat, Yas, Mussafah and Khalifa City. All numbered routes inside the city read Hafilat at boarding; tap-on / tap-off rules apply on the longer regional links inside city limits.
The Main Bus Terminal in the Al Ras Al Akhdar area is the hub. From there, every numbered route — single-digit, double-digit, three-digit — accepts the same Hafilat balance. The fare profile on the card decides the deduction at each tap.