Bike hand signals are confusing, here's a better, simpler solution
I’ve witnessed many altercations involving cars and bikes, and more than a few involved misunderstood signals. A driver who nearly mowed me down on my prized carbon-fibre bike a while back leaped out of his car screaming that I hadn’t signalled. In fact, I had signalled, but the driver didn’t realize that bicyclists indicate right turns with their left arm. Read more.