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2. Slippery rail - Wikipedia

   en.wikipedia.org/wiki/Slippery_rail

   A Network Rail Railhead Treatment Train uses a high-pressure water jet to remove compressed leaf mulch from the rails in the United Kingdom.. Slippery rail, or low railhead adhesion, [1] [2] [3] is a condition of railways (railroads) where contamination of the railhead reduces the traction between the wheel and the rail.

3. Sliding door - Wikipedia

   en.wikipedia.org/wiki/Sliding_door

   Some sliding doors run on a wall-mounted rail, like this one Sliding doors in a modern wardrobe. The 'top-hung' system is most often used. The door is hung by two trolley hangers at the top of the door running in a concealed track; all the weight is taken by the hangers, making the door easier to move.

4. Electric gate - Wikipedia

   en.wikipedia.org/wiki/Electric_gate

   Driveway gate openers can be the rollback (sliding) type that retracks a gate along the fence or wall on wheels or bearing, or the swing type that draws the gate open or closed on hinges. They are usually operated by a remote controller or a sensor

5. Adhesion railway - Wikipedia

   en.wikipedia.org/wiki/Adhesion_railway

   However, close examination of a typical railway wheel reveals that the tread is burnished but the flange is not—the flanges rarely make contact with the rail and, when they do, most of the contact is sliding. The rubbing of a flange on the track dissipates large amounts of energy, mainly as heat but also including noise and, if sustained ...

6. Automated Guideway Transit System project (Philippines)

   en.wikipedia.org/wiki/Automated_Guideway_Transit...

   The AGT 30, can carry 30 passenger per coach and has two passenger sections with safety features. It also has a communication and automated fare collection system. The prototype has two coaches with full airconditioning and has a suspension system, solid tires for guide wheels and extra wide automatic sliding doors.

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   www.aol.com/games

   Discover the best free online games at AOL.com - Play board, card, casino, puzzle and many more online games while chatting with others in real-time.