Practice question

What is a 'Pinlock' lens insert used for in motorcycle helmet visors?

To lock the visor permanently closed in the down position
To create a double-pane sealed air pocket that prevents visor fogging in cold or humid weather
To provide night-vision thermal imaging
To lock the helmet to the motorcycle frame when parked

Answer: B — To create a double-pane sealed air pocket that prevents visor fogging in cold or humid weather

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