I was cycling along an arterial road during rush hour. There is a cycle lane which starts in the lead up to the left turn. I'm not a big fan of cycle lanes, but it is moderately helpful in allowing me to filter (on the left) along the queue of cars and up to the traffic lights. The lights went green as I approached (yay!) and I headed off along the cycle lane at speed. A guy riding along the pavement towards me was about to encounter pedestrians so to over take them he rolled off the kerb directly into my path. So at this point he is cycling the wrong way and we are on collision course with lorries and cars whizzing alongside me. I'm not totally sure how I escaped but I guess I looked for the gap and tried not to fixate on the other bike. I think the van behind me saw what happened and pulled over enough for me to get through. Very dangerous, but no harm done (except to my nerves!).