Spanish in Mexico
The most popular types of urban transportation are small vans called "combis" (or "peseros" in Mexico city) and public buses. There are no set schedules because transportation runs continuously throughout the day, with fewer vehicles running at night. Most services stop at 11:00 p.m. or midnight depending on their destination. Both "combi" and bus services have established routes identified by the color of the line painted across the vehicle and by the number or letter indicated on the windshield. If unsure about a destination, ask the drivers. Both "combis" and buses stop at bus stops but also may stop along the way or at stoplights if somebody signals by swinging an arm out. On a "combi", the passenger pays on board. Since there are no buzzers, it is necessary to call out if one is planning to get off at the next stop. On a bus, the passenger must pay upon entering. There is a bell to ring that indicates a passenger wants to get off at the next stop.
Taxis are another common, but more costly form of transportation. With the exception of major holidays, taxis run continuously throughout the day and evening.
"Riding the Public Transportation Van"Transcript document: