Besides the regular (Ordinario) service, Line 3 (Chimalhuacán – Pantitlán) runs four Express services that skip stations: Express 1 (Acuitlapilco – Pantitlán, 13 stops, 37 min, daily), Express 2 (Chimalhuacán – Pantitlán, 8 stops, 40 min, Monday to Saturday), Express 3 (Rayito de Sol – Pantitlán, 8 stops, 22 min, Monday to Friday) and Express Rosa (Chimalhuacán – Pantitlán, 10 stops, 40 min, Monday to Saturday), which is for women only. They all use the same platforms as the regular service, so you can switch service at any shared station.
