When I first started riding I didn't like filtering too much so just kinda waiting around, as you become more confident you'll be zooming up the right in no time Also especially in stationary traffic I find the biggest danger are other two wheel users who change "filter lanes" without looking right in front of you! Taking some time to assess the situation like you did rather than banzai'ing it up is top stuff Also as Al-stu said remember to thank nice drivers! I see the same people everyday and I like to think they are more likely to get out the way for the lovley green bike who thanks them