Dual carriageway with numerous pedestrian crossings, traffic moving fairly slowly – 10-15mph. Bus start-stopping ahead, then van, then me. Bike follows me as I crawl forward, hopping on and off the pavement then nips up my inside as the traffic started to slow, so I back right off and let him past into the gap, he starts to pound away on the pedals and race after the van who is following the bus closely. Pedestrian lights change, van gambles and nips through on orange. Bus stops dead, van does too. Cyclist stops dead, on the back of the van. Do some people have no observation? He picked himself up and the van driver got out looking rather pee'd off.