'Cause it's the cyclists that need educating...

I disagree. PO vans are often driven so aggressively I'd rather hang back where this picture was taken from.

For serious? It's your right to be at the front in the funny green box. What's Mr. Postman gonna do, drive straight over you? He can wait as far as I'm concerned... In a few feet he'll be able to overtake you if the road is open...