Hot? Tell the driver|Oftentimes, passengers riding public transit will complain about air conditioning when the driver has not turned it on, or not regulated the air conditioning properly. On some buses with A/C, drivers will close all the windows, but fail to properly turn up the air conditioning. Passengers should tell the driver if they are unhappy with the level of air conditioning on trams with the capability for A/C. According to the regulations, the driver must have the cab door closed, so s/he cannot control the temperature in the passenger compartment while driving. If the passenger warns him of temperature fluctuations, he must carry out an inspection or report a defect to the control room.