A timely reminder that traffic danger comes in many forms for people walking, wheeling & rolling. #VisionZero is about fixing the system, not just the symptoms. Great visual from @gregannandale.com: stepback.gregdev.com
'Step back' - air pollution at pedestrian crossingsEvery busy road produces a cloud of pollution you can't see. Where you stand in it matters more than most people might realise.stepback.gregdev.com