The Bus Rapid Transit system went into service in early 2010. It is essentially a long segregated bus lane (not an elevated busway like in Xiamen) running along the Tianhe Road and Zhongshan Avenue corridor towards the eastern suburbs. Some intersections are traversed by bridges and tunnels, which cuts journey times considerably, but other intersections have traffic lights and therefore traffic jams, and crowds can be as dense as in Metro stations but with fewer doors and a narrower standing area compared to Metro trains.
All buses that use the BRT start with a B prefix (B1, B22 etc.), though some without the "B" stop nearby. When reading a bus route (in Chinese) you can see the BRT logo above each BRT station name, like the GZ Metro logo above bus stops that are near Metro stations. The B1 stops at every BRT station, but other B routes use any number of BRT stations (sometimes just one) and use normal roads the rest of the time.