On board cams are being used increasingly these days, and in many cases, they can be useful in court. This will be one of those instances.
Reddit user ‘grandehead’ posted this video filmed from inside his Honda S2000, and you can see him go through the crossroads with the lights on green, when a woman cuts across him, clearly jumping a red light, and crashing into him. He said he escaped with just a sore wrist and back pain, with a friction burn on his hand from the air bag going off.
Gutted for him. Dashcams are definitely a good idea.