Commuters are seen on a street in Hanoi October 6, 2014. Roads in Southeast Asia have been getting a little louder lately as motorcycle makers, an aspiring middle class and easy bank credit come together to breed a new genus of motorcyclists ? the big-bike rider. The landscape is slowly shifting as the Southeast Asian market, the world's third-largest after China and India, undergoes a structural change. In Malaysia and Vietnam, motorbikes with bigger engine capacities are outselling their smaller cousins. REUTERS/Kham (VIETNAM - Tags: TRANSPORT BUSINESS SOCIETY)