of bladder and digestive health problems. Furthermore, if the concentration of a driver in urgent need is compromised, it becomes a broader public safety concern. Design Entry Doorless entry Modern public toilets may be designed with a labyrinth entrance (doorless entry), which prevents the spread of disease that might otherwise occur when coming in contact with a door. Doorless entry provides visual privacy while simultaneously offering a measure of security by allowing the passage of sound. Doorless entry also helps deter vandalism; fewer audible clues to another person entering discourages some vandals. Doorless entry may also be achieved simply by keeping an existing door propped open, closed only when necessary. Coin operated entry Pay toilets usually have some form of coin operated turnstile, or they have an attendant who collects the fee. Privacy People often expect a high level of privacy when using public toilets. Privacy expectations may include toilet cubicles, cubicle doors, urinal partitions and similar. The World Health Organization states that toilets should be "suitable, private and safe to use for all intended users, taking into consideration their gender, age and physical mobility (e.g. disabled, sick etc.)" and "All shared or public toilets should have [...] doors that can be locked from the inside, and lights". Service access Modern public toilets often have a service entrance, utilities passage, and the like, that run behind all the fixtures. Sensors are installed in a separate room, behind the fixtures. Usually, the separate room is just a narrow corridor or passageway. Sensors Sensor-operated fixtures (faucets, soap dispensers, hand dryers, paper towel dispensers) prevent the spread of disease by allowing patrons to circumvent the need to touch common surfaces. Sensor-operated toilets also help conserve water by limiting the amount used per flush, and require less routine maintenance. Each sensor views through a small window into each fixture. Sometimes the metal plates that house the sensor windows are bolted on from behind, to prevent tampering. Additionally, all of the electrical equipment is safely behind the walls, so that there is no danger of electric shock. However, a RCCB must be used for all such electrical equipment. Some public toilets have an automatic sensor controlled flushing system that flushes the toilet when the user steps away from the sensor. They might also have an additional button that the user can push to provide a second flush. Urinals Urinals for males are common in public