Originally Posted by
genec
Really? I do it all the time when I want to ensure that motorists know I am there.
I don't always filter forward, but there are times when I am about to enter a flow of traffic that may have different lane choices, and I want motorists to not make assumptions about what I might do, so I move forward and plant myself in the lane in a way to show and control where traffic is about to go. Everyone is at stop, so it is hardly a dangerous thing to do.
In Europe it is highly expected for cyclists and scooters to filter forward.
The new bike boxes in Portland are designed exactly for this sort of forward position.
In locations where the infrastructure is designed for 2-wheeled vehicles to filter (e.g., the above photo), there's nothing wrong with it. In most places in the US, where such infrastructure doesn't exist, it looks like a good way to antagonize drivers. My approach is simply to get in line at an intersection.