That's a really good idea because right after my first reaction, which was to hit the brake so I wouldn't be pushed into the other lane; I looked up at the light, saw it was still a steady green and tried to find my phone on the passengers seat. 

Too bad it had flown off at impact and I didn't see where it went. Photo evidence would have been nice since I'm not sure if the other driver is going to fight the citation or if his insurance company is going to try to claim that it wasn't his fault.