More than 3,000 taxis operate within Dubai making an average of daily 192,000 trips, carrying about 385,000 persons. All Dubai taxi services are licensed by the RTA, and are easily identifiable by their cream-colored bodies and varied roof colors. The Dubai Taxi Corporation has a Ladies Taxi service, with pink roofs, exclusively for female passengers, using female drivers.
Ladies and Families Taxi is a dedicated service to the special ones in our lives driven by female drivers. This spacious taxi is exclusive to ladies and families of all nationalities and can be reserved via Dispatch Center 04 2080808 directly or picked-up at Dubai International Airport, various Hospitals and/or Shopping Malls (upon availability). This service can be distinguished from other taxis by the vehicleâ€™s pink roof top.
Source: http://www.travelingwiththejones.com/2015/11/23/40-fun-facts-about-dubai-united-arab-emirates/, http://www.dubaitaxi.ae/en/ourservices/pages/ladiesandfamiliestaxi.aspx