I have this saved in my phone –
Is there a circumstance when a driver can refuse to take on a passenger?
It is against the law to refuse a person based on race, disability or destination in the District of Columbia. A taxicab driver is required to drive a passenger to any destination in the District of Columbia. However, if the driver has been operating the taxicab for more than twelve (12) hours of any continuous twenty-four (24) hour period, or the vehicle is on-call or off-duty for mechanical or other reasons, then he/she may refuse to take on a passenger. (See rule 820). The driver, however, is required to display the “on-call” or “off-duty” or “out-of-service” signs indicating that the vehicle is out of service and must have the cruising light turned off indicating that the taxicab is not for hire. (See rule 605.6)