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Em.
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I would call the first image a railing, or a handrail.

  • railing
    a fencelike barrier composed of one or more horizontal rails supported by widely spaced uprights; balustrade.
  • handrail
    a rail serving as a support or guard at the side of a stairway, platform, etc.

(Dictionary.com)

The second one, I would call it a rack, or a bike rack. It could also be called a stand.

A bicycle parking rack, usually shortened to bike rack and also called a bicycle stand, is a device to which bicycles can be securely attached for parking purposes.
(Wikipedia)

Wikipedia has a few specific names, like U-rack. It says the variant names are Staple and Sheffield rack.
enter image description here

Em.
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