indicator) means the projections within the principal grooves designed to give a visual indication of the degree of wear of the tread. To help locate these on a tyre, inspectors should look for a ‘’ or ‘TWI’ mark on the outer edge of the tyre side wall (most tyres have these marks). Tube means an inflatable elastic liner, in the form of a hollow ring fitted with an inflation valve assembly, designed for insertion into certain tyre assemblies to provide a cushion of air or gas, that, when
-beam headlamps. Condition 5. A lamp is insecure or contains moisture in the form of large droplets, runs or puddles. 6. A lens is missing or has a hole, crack or other damage that allows moisture or dirt to enter. 7. A reflector is damaged or has deteriorated so that light output is reduced. 8. A fog lamp warning device, if fitted, is obscured from the driver’s vision. Performance 9. When switched on, a front fog lamp does not operate. 10. When switched on, a front fog lamp emits light
contains dirt or moisture in the form of large droplets, runs or puddles. 11. A main-beam headlamp warning device is obscured from the driver’s vision. Performance 12. When switched on, a headlamp emits a light that is: a) not substantially white or amber, or b) not approximately equal in colour or intensity to the other lamp in a pair, or c) not steady, or d) not bright enough to illuminate the road ahead, eg due to modification, deterioration or an incorrect light source, or e) too bright
