Hairpin

A particularly tight 180 degree turn in the road

Handgrip

The grip on the end of the handlebars

High side

A high-side is where the bike suddenly regains traction after beginning to skid and throws the rider over the bike. The rider typically exits on the high side of the bike - the side not closest to the ground.

Hit and run

Describes when a road user hits a pedestrian or other vehicle and does not stop to check whether they are okay or pay for damage in fear of the consequences

Hit the road

Get on your bike and start riding!

Hog

Nickname for a Harley Davidson motorcycle

HORT/1

A producer given by police officers when someone who has been stopped cannot produce documents such as Driving Licence, HGV Driving Licence, Certificate of Insurance, MOT Certificate. The HORT/1 gives the road user seven clear days from the date the producer has been given to go to the police station to provide the said documents.

Hydrometer

Describes a device which measures the charge in a lead acid battery

Hydroplane

This is caused when the wheel meets a plane of water at high speed. The ridges and grooves in the motorcycle tyre are unable to remove the water from between the tyre and the road and the motorcycle is left without grip - the motorcycle ends up riding on water which can be a very dangerous situation. If you ever find yourself in this situation, try not to make any movements or changes in direction or speed. Concentrate on balance (don't touch brake or throttle) until the hazard has passed and you have slowed sufficiently to increase grip.