bog danger England english grasses Great Britain heath heathland landscape marsh nature sign Surrey trees warning assistance banned broken car cars cutout isolated lot machine mechanic no no parking park parking parking lot roadsign roadsigns signs tow towed vehicle yellow appropriate behavior appropriate behaviour black care communication dangers deep deep water depth jellyfish risk risks stingers submerged objects swimmers swimming water white arrow city direct direction directions graphic grid honeycomb inform orange point reflect reflective traffic warn atlantic fjord hills islands islets lighthouse norway ocean rock sea sky tower blue break cold crack fissure fracture glacier ice melt melting communicating denied directing directional directive informing not allowed not permitted permission denied prohibited prohibition red road sign stop street sign traffic flow verge fines information no-parking not-allowed not-permitted penalties permission-denied street-sign traffic-flow lane marker Sea lane waves access-denied access-limited advice alert announcement appropriate-behavior appropriate-behaviour ban be-careful beware bicycles-prohibited bylaws concern dangerous law legal no-wheels pedestrian-care pedestrian-safety prohibitions restricted restriction restrictions rollerskates-prohibited rules safety skateboards-prohibited warning-sign watch watch-out advising authorised-entry-only authorized-entry-only behave behavior behaviour caution communicate confined-space lettering limited-access limited-permission limited-space risky signage unauthorised unauthorized