Don't go when someone "waves" you to go... Another driver did that for another driver that pulled out in front of me... causing me to collide. I ended up with three fractures in my face, two sprained wrists and a sprained neck. Most seem to wave because they want to have that "I did something nice today" feeling. Causing injury to another isn't nice. You go when you deem it safe, no other time. Unless the person waving is a cop and controls the intersection, you have no reason to proceed.