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Truck apron
Truck aprons are found at roundabouts and slip lanes. These allow large vehicles—trucks, buses, and recreational vehicles—to navigate the roundabout or turn without striking fixed objects or other road users.
== Truck apron construction ==
According to Alberta Transportation, “truck aprons are designed to support the weight of large trucks and help long vehicles turn safely through roundabouts.〔(【引用サイトリンク】url=http://www.transportation.alberta.ca/roundabouts.htm )〕 Truck aprons are between the road portion of the roundabout and the inner circle of the roundabout.〔(【引用サイトリンク】url=http://www.mto.gov.on.ca/english/ontario-511/roundabouts.shtml )〕 On slip lanes, the truck apron is located between the road surface (bitumen) and the sidewalk.
Both in roundabouts and slip lanes the truck apron is raised slightly, in an attempt to keep light vehicles on the main road surface. The truck apron is constructed of reinforced concrete.
In many parts of North America planners, designers, and builders attempted to make truck aprons and roundabouts more attractive by stamping and colouring the concrete. From a distance the concrete looks like red paving stones.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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