construction areas, to protect them from damage during excavation. Colored lines, flags, or both are used to mark the location and denote the type of underground utility. A special type of spray paint dispenser, which works when the can is upside-down, is used to mark lines, often in a fluorescent color. On flags, a logo often identifies the company or municipal utility which the lines belong to. Flags may also be an advertisement for a company which has installed an irrigation system for lawns or gardens. In this case, each sprinkler head is usually marked, so that landscaping crews will not cover or bury them with soil or sod, or damage them with tractors or other construction equipment while digging holes for trees, shrubs, or other large plants or fenceposts. This is also important because a vehicle (tractor, truck, or otherwise) can break a sprinkler or the hard-PVC pipe or joint it is mounted on, simply by driving over it, particularly on newly moved soil which is uncompacted and therefore unsupportive of such weight. Australia The national standard for Australia uses the following color guide: {| class="wikitable" |style="background:#F9A51B; color:black" | Orange |electricity |- |style="background:#FFF101; color:black" | Yellow |gas |- |style="background:#0020C2; color:white" | Blue |water |- |style="background:#FFFFFF; color:black" | White |communications |- |style="background:#D1232A; color:white" | Red |fire services |- |style="background:#EBEBBE; color:black" | Cream |sewerage |- |style="background:#A153A1; color:white" | Purple |reclaimed water |- |style="background:#939598; color:white" | Silver/Gray |steam |- |style="background:#442806; color:white" | Brown |oils, flammable liquids |- |style="background:#40C7F4; color:black" | Light blue |air |- |style="background:#F433FF; color:black" | Pink |Unidentified services |- |style="background:#000000; color:white" | Black |other liquids |} Germany In Germany, the colors used for temporary marking of underground utilities are not standardised like in other countries. However, permanent marker signs are used for utilities like hydrants, drinking water lines and natural gas lines. A permanent marking of cables and sewage lines is not usual if they run in the public right-of-way. The standard for permanent markers in Germany uses the following colors: {| class="wikitable" |style="background:#FFFFFF; border:#EF3122 3px solid;" | White with red frame |fire services (hydrants, suction points etc.) |- |style="background:#006EB6; color:white" | Blue |drinking water |- |style="background:#FFF101; color:black" | Yellow |gas |- |style="background:#009365; color:white" | Green |sewage and drain lines |- |style="background:#F7981D; color:black" | Orange or |rowspan="2" | hot water/steam lines for district heating |- |style="background:#EF3122; color:white" | Red |- |style="background:#FFFFFF; color:black" | White or |rowspan="2" | high-voltage power lines