Possible Clues:

• Two-wheeled vehicles
• Two-wheelers
• Wheeled vehicles
• Shortly officially approve introducing freezing cold transport
• Contracted rubbish collector goes round travelling on two wheels
• The mounts of the Band of the Royal Netherlands Army Mounted Regiments
• They may have chains and locks
• Extremely cold in Canadian province — Quebec's the leader in snow vehicles
• These may be folding or recumbent
• Five- or ten-speeds