The Roads & Transport Authority (RTA) delegation witnessed the technical trial run of the Dubai Metro on the test track at Wadaoki Plant in Mitsubishi Heavy Industries, Mihara City, Japan. RTA Chairman of the Board and Executive Director Mattar Al Tayer termed the test as fully successful, reported Trade Arabia. He said the train was a crucial milestone in the path of implementing Dubai Metro Project. Following the trial run, Al Tayer expressed delight over the caliber of work done. Dubai Metro is considered the biggest driverless metro project implemented as one unit across the world. Total cost of the two lines (Red and Green Lines) is about AED15 bn.