What's the issue with undertaking? If you're too slow, get out of the way.
If they're too slow, pass them on the right. If they're slowing for lights or due to an obstruction, don't undertake at speed then scoot along the side of a lorry up the kerb or bounce up onto the pavement, scattering peds everywhere.
If they're too slow, pass them on the right. If they're slowing for lights or due to an obstruction, don't undertake at speed then scoot along the side of a lorry up the kerb or bounce up onto the pavement, scattering peds everywhere.