appropriate behavior appropriate behaviour black communicating communication directing direction directional directive give way indication indicator informing road sign rules safety sign street sign traffic traffic flow warning white asphalt berm electric grass hard shoulder pavement post pylon roadsign shoulder street town trees coctail drawing drink glass holiday party road summer sun tourism touristic umbrella vacations ancient brick city door houses mediaeval narrow old shops window york beware danger digger drive excavator security travel vehicle yellow animal sheep arrow black-on-white gray grey law no-alternative one-way one-way-signs only pointer pointing reflective signs specific street-sign traffic-flow traffic-sign bent curve hill hills mountain mullholland speed limit arrows blue divergent diverging splitting splitting-up turn turning two-way denied not allowed not-permitted parking permission denied prohibited prohibition purple road-sign stop verge