Public transportation from Abu Dhabi Airport, you can rent a car, take a taxi (outside of Arrivals halls T1 & T2) , or take a bus:  Inter-terminal shuttles run every 15 minutes stopping outside Terminal 1 at upper curbside in front of Entrance 5; and at Terminal 2 in front of Departures.
    Public Bus A1 (green & white) runs every 40 mins to the city and takes aut 45 minutes. It departs from the lower curbside of Terminals 1, & 3 and outside of Terminal 2, and makes stops along the way to the city, passing by Bus Stand at Muroor & Street 11, and terminating at Old Fish Market on Al Nasr Street (near NYU Abu Dhabi).
    Service A1:    Al Zahiyah City Air Terminal - Abu Dhabi International Airport Terminals 1 &2 - open:  http://dot.abudhabi.ae/ckfinder/userfiles/files/service%20A1.pdf
    Service X81:  Ruwais ADNOC Bus Station - Abu Dhabi International Airport (AUH) - open:  http://www.dot.abudhabi.ae/ckfinder/userfiles/files/ServiceX81.pdf
    Service 211:  Mussafah Dalam Mall - Abu Dhabi Airport Terminal 1 - Al Rahba Hospital - open:  http://dot.abudhabi.ae/ckfinder/userfiles/files/BusService211.pdf
    Service 240:  Al Wathba Worker City - Abu Dhabi Airport Terminal 1 - Al Rahba Hospital - open:  http://dot.abudhabi.ae/ckfinder/userfiles/files/service240updated.pdf
    Service 490:  Abu Dhabi Int'l Airport Terminal 1 & 2 - Al Ain Bus Station - open:  http://www.dot.abudhabi.ae/ckfinder/userfiles/files/Service490.pdf
    Etihad Airways provides its customers with free bus coaches between Dubai & Abu Dhabi Airport (tel: 04 3216471 or 3216473) or visit:  www.etihadairways.com.

Google Plus One