Buses used 6.8 million litres of diesel oil; CNG (compressed natural gas) was also used, the use of which increased by 89% compared to the previous year.
Avtobusi so za linijski prevoz porabili okoli 6,8 milijona litrov dizelskega goriva; uporabljali so tudi stisnjen zemeljski plin in ga porabili za 89% več kot v letu 2014.