Artists such as Kurt Wenner and Julian Beever have created amazingly intricate and realistic street paintings using the chalk and pastels. Sidewalk chalk is used at some universities to advertise for events, especially where there is much concrete. Prohibitions are set for where students can chalk, usually limiting it to areas that will be washed away with rain, or areas which are set to be cleaned of chalk markings.
External links
Busker Alley - Actual videos of sidewalk artists with chalks & paints