Glossary
Abreast Side by side
Acceleration Speeding up
Arrhythmia Irregular or abnormal heart beat
Axle A pin, pole, or bar that connects a pair of opposite wheels on a vehicle
Blind spot An area that a driver or other road user cannot see directly or with their mirrors. This requires them to turn or look sideways to see other road users
Blow out Sudden tyre failure
Build outs Kerbing which extends from the side of the road to reduce traffic speed
Cardiovascular diseases Diseases involving the heart and blood system
Central median island An area in the centre of a road which separates approaching flows of traffic or a pedestrian crossing
Central nervous system Brain and spinal cord
Cerebrovascular diseases Diseases involving blood vessels in the brain
Certificate of Professional Competency (CPC) A certificate drivers must have before they can drive a HGV or a bus for a living Chicane A traffic-calming measure to make vehicles slow down and weave between traffic lanes
Chevron board Traffic warning signs with hatched markings indicating a sudden change in direction
Cross-ply tyres Tyres with cords made of steel and other materials, which cross at various angles to strengthen the side of the tyre and its tread
Deceleration Slowing down
Defects Faults, such as broken mirrors, missing lights
Design Gross Vehicle Weight (DGVW) The manufacturers specifications of Gross Vehicle Weight (GVW see below)