access accessible across barriers bridge bright concrete construction cycle cyclists estuary handrails inlet light lighting metal ocean ocean-view path pathway pedestrians railing rails safety shared sharing solar-lighting solar-panels span steel strength strong sunlight sunshine surface surfaces trees vegetation water angle Battery battery-powered charged charging daytime energy energy-efficient garden garden-light inexpensive internal-rechargeable-battery lamp led light-emitting-diode plastic portable power solar solar-panel solar-powered spike-light stationary technology top alternative alternative-energy alternative-power alternatives angles appearance clouds dark darkening exterior external glass lamp-post lamppost lights outdoor outdoors protected protection protective renewable security shapes shine sky styles