'Auto Transmissions', also known as automatic transmissions, use automatic gear boxes in vehicles for changing gears automatically when needed, without the help of drivers. In Callao there are many vehicles which have auto transmission facilities. Various types of transmissions are there depending on the number of gears. Traditional auto transmissions had three gears- neutral, reverse and park. Modern auto transmissions have a minimum of four gears and a maximum of eight gears.
There are quite a few vehicles also in Callao which do not use auto transmissions. These vehicles in Callao either depend on manual transmissions or semi-auto transmissions. Mostly all the cars are auto transmission-enabled in Callao and it is easier to drive these vehicles.