Hey, passengers. Have you seen these orange circular lights on taxi cabs? They are usually on the back of the trunk, but sometimes also on the front by the radiator.
Have you seen one lit and flashing? I hope not, because if it is, it means the taxi driver needs help!
Those lights are called "trouble light" and sometimes "emergency light" or "amber light". It is a visual distress signal to alert the authorities that the driver is in danger, say being attacked or being robbed. It is activated by the driver with a switch, and it is a silent alarm. If you see one, make sure to call the police!
Hey Uber drivers!
Maybe you should be installing it too. I assume the authorities will come to your aid. Very affordable and easy to install.