On December 28, 2014, the Beijing Subway switched from a fixed-fare to a distance-based fare schedule for all lines except the Capital Airport Express. For all lines except the two Airport Express lines, fares start at ¥3 for a trip up to 6 km in distance, with ¥1 added for the next 6 km, for every 10 km thereafter until the trip distance reaches 32 km, and for every 20 km beyond the first 32 km. A 40 km trip would cost ¥7.