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2. Guard rail - Wikipedia

   en.wikipedia.org/wiki/Guard_rail

   Staircase railings in the Degré du roi, part of the Petit appartement du roi, in the Palace of Versailles, Versailles, France. Guard rails, guardrails, railings or protective guarding, [1] in general, are a boundary feature and may be a means to prevent or deter access to dangerous or off-limits areas while allowing light and visibility in a greater way than a fence.

3. Traffic barrier - Wikipedia

   en.wikipedia.org/wiki/Traffic_barrier

   Traffic barrier with a pedestrian guardrail behind it. Traffic barriers (known in North America as guardrails or guard rails, [1] in Britain as crash barriers, [2] and in auto racing as Armco barriers [3]) keep vehicles within their roadway and prevent them from colliding with dangerous obstacles such as boulders, sign supports, trees, bridge abutments, buildings, walls, and large storm drains ...

4. Guard rail (rail transport) - Wikipedia

   en.wikipedia.org/wiki/Guard_rail_(rail_transport)

   Guard rails at Diêu Trì railway station, Vietnam This curved track in Myanmar, near Pekon, includes a guard rail on the inside rail of the curve. In rail transport, guard rails or check rails are rails used in the construction of the track, placed parallel to regular running rail to keep the wheels of rolling stock in alignment to prevent derailment.

5. Cable barrier - Wikipedia

   en.wikipedia.org/wiki/Cable_barrier

   Also at this level, a 4,400 pounds (2,000 kg) pickup truck impacts at 60 miles per hour (97 km/h) and 25°. TL-4 includes both these tests but adds a 17,600 pounds (8,000 kg) single-unit truck impacting at 50 miles per hour (80 km/h) and 25°. All cable barrier systems available today are approved at either TL-3 or TL-4.

6. Cowcatcher - Wikipedia

   en.wikipedia.org/wiki/Cowcatcher

   The required strength of the system is 30 kN (6,700 lbf) in the middle of the track and 50 kN (11,000 lbf) near the rails. [ 3 ] Modern US diesel locomotives have flatter, less wedge-shaped cowcatchers, because a diesel locomotive has the cab near the front, and the crew are vulnerable to impact from obstacles pushed up by the cowcatcher.

7. Guard rail (disambiguation) - Wikipedia

   en.wikipedia.org/wiki/Guard_rail_(disambiguation)

   A guard rail is a protective boundary feature. Guard rail or guardrail may also refer to: Railroad guard rails (otherwise known as check rails), installed parallel to trackbed rails, for railway safety; RC-12 Guardrail, a U.S. Army intelligence-gathering aircraft based on the C-12 Huron; Roof edge protection, rails installed on roofs to protect ...