as you could have a serious fault.  ● If the charge warning light comes on while you are driving, it  may mean that the battery isn’t charging. This should also be  checked as soon as possible to avoid loss of power to lights  and other electrical systems.  Window tints.   You MUST NOT   use a vehicle with excessively dark  tinting applied to the windscreen, or to the glass in any front  window to either side of the driver. Window tinting applied during  manufacture complies with the Visual Light Transmittance (VLT)  standards. There are no VLT limits for rear windscreens or rear  passenger windows.  Laws RTA 1988 sect 42 & CUR reg 32  Tyres.   Tyres MUST   be correctly inflated to the vehicle  manufacturer’s specification for the load being carried. Always refer  to the vehicle’s handbook or data. Tyres should also be free from  certain cuts and other defects. Cars, light vans and light  trailers MUST   have a tread depth of at least 1.6 mm across the  central three-quarters of the breadth of the tread and around the  entire circumference. Motorcycles, large vehicles and  passenger-carrying vehicles MUST have a tread depth of at least 1  mm across three-quarters of the breadth of the tread and in a  continuous band around the entire circumference. Mopeds should  have visible tread. Be aware that some vehicle defects can attract  penalty points.  Law CUR reg 27  If a tyre bursts while you are driving, try to keep control of your  vehicle. Grip the steering wheel firmly and allow the vehicle to roll  to a stop at the side of the road.  If you have a flat tyre, stop as soon as it is safe to do so. Only change  the tyre if you can do so without putting yourself or others at risk –  highwaycodeuk.co.uk 180 