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2. Bollard - Wikipedia

   en.wikipedia.org/wiki/Bollard

   Bollards may also be used to enclose car-free zones. Bollards and other street furniture can also be used to control overspill parking onto sidewalks and verges. [11] Bollards can be temporary and portable, such as this traffic control bollard separating the road from the worksite.

3. New Bullards Bar Dam - Wikipedia

   en.wikipedia.org/wiki/New_Bullards_Bar_Dam

   New Bullards Bar Dam is a variable radius concrete arch dam constructed in the early 1960s in California on the North Yuba River.Located near the town of Dobbins in Yuba County, the dam forms the New Bullards Bar Reservoir, which can hold about 969,600 acre⋅ft (1.1960 × 10 9 m 3) of water.

4. File:Security bollard-planter in Washington, D.C.jpg - Wikipedia

   en.wikipedia.org/wiki/File:Security_bollard...

   Security_bollard-planter_in_Washington,_D.C.jpg (797 × 598 pixels, file size: 328 KB, MIME type: image/jpeg) This is a file from the Wikimedia Commons . Information from its description page there is shown below.

5. Talk:Bollard - Wikipedia

   en.wikipedia.org/wiki/Talk:Bollard

   Tall (1.15 meter/4 foot) slim (10 cm/4 inch) fluorescent red or orange plastic bollards with reflective tape and removable heavy rubber bases are frequently used in road traffic control where traffic cones would be inappropriate due to their width and ease of movement. Also referred to as "delineators", the bases are usually made from recycled ...

6. Raised pavement marker - Wikipedia

   en.wikipedia.org/wiki/Raised_pavement_marker

   Delineators are tall pylons (similar to traffic cones or bollards) mounted on the road surface, or along the edge of a road, and are used to channelize traffic. These are a form of raised pavement marker but unlike most such markers, delineators are not supposed to be hit except by out-of-control or drifting vehicles.

7. Clearance (civil engineering) - Wikipedia

   en.wikipedia.org/wiki/Clearance_(civil_engineering)

   In civil engineering, clearance refers to the difference between the loading gauge and the structure gauge in the case of railroad cars or trams, or the difference between the size of any vehicle and the width/height of doors, the width/height of an overpass or the diameter of a tunnel as well as the air draft under a bridge, the width of a lock or diameter of a tunnel in the case of watercraft.