In most cities, roadworks are filled with lines, arrows and numbers to indicate certain important but hidden infrastructures not to be messed with. For the unknowing, these can seem like an art piece in its own right, with weird lines and shapes, and even some regular formalistic elements one can find in graffiti writing. They are ephemeral as well: as they use a special kind of spraypaint it will be quickly washed away by rain.
All photos here are documents of found works on the floor.