Ride sharing services like Uber and Lyft have gotten very popular in recent years, and one thing that long-term drivers have noted is that it's important for drivers to buy dash cams. These can usually be situated to point out in front of the car or back at the passengers--some do both at once--and they can be very helpful if there is an accident.
One driver related a story where he didn't have a dash cam and he and a taxi cab crashed. He said that the taxi driver was the one who caused it, but the police officer told him he'd be unlikely to win a lawsuit. The saving grace was that a person witnessed the accident and stepped forward to tell the court, so he did get his money.
However, he realized that most witnesses will not stay near an accident. People are busy, and those who aren't involved have little to gain from helping out. A dash cam, though, acts as a witness who is always watching. The video footage can, in some cases, make it so that a case plays out much differently than it would have without the camera.
The driver also said that, on a different occasion, he was driving four people through town when one of them jokingly pulled on the steering wheel. The car did not crash, but, if it had, a dash cam facing the passengers would have helped to show that the driver was not actually at fault.
If you've been injured in an accident and you caught it on a dash cam, be sure you know how to use it as evidence in Oklahoma.
Source: The Rideshare Guy, "4 Reasons Why Drivers Need a Dash Cam," Scott Van Maldegiam, accessed March 25, 2016