ahead background bicycle bike blue cycle pole post posts red sign signpost signposts signs sky sundtraffic traffic triangle warning yellow double go road steel three two walk walking child crossing crosswalk man pedestrian round white zebra zebracrossing allow allowed biking decree bus pass triple ascent climb couple cyclist grass green hill horizon lycra mountain pair path spokes wheel cold cycling Fahrrad frost frosty hero heros ice mobility ride riding snow wall winter winter day winter scenery arch arches bent building concrete hoop lock metal outside park pavement rack school secure stand store tube work black chain close component components crank derailleur frame gear gears gray grey macro pedal push reflector rubber tyre UP