I've never struck a pedal in 14+ months of riding my conversion daily in traffic. I ride a Nishiki with 170mm cranks and Time ATAC clipless pedals - I'm sure the clipless pedals help in that regard.

The only thing I really watch out for is squeezing between vehicles and the curb, but if it's really close I just unclip one foot. I don't usually corner at high velocity though, so ymmv.