In Europe or in Australia, the rules require a rider to have a front and a rear light when riding at night and in poor weather conditions.
The rider of a bicycle must not ride at night, or in bad weather conditions under reduced visibility, unless the bicycle, or the rider, displays the following:
(a) a flashing or steady white light that is clearly visible from the front of the bicycle; and
(b) a flashing or steady red light that is clearly visible from the rear of the bicycle; and
(c) a red reflector that is clearly visible on the rear of the bicycle when light is projected onto it by a vehicle's headlight on low-beam
Battery powered lights with flat batteries
Many riders have lights attached to their bikes which are useless if the batteries are discharged and need to be replaced. This is particularly true if the rider is a child riding home late and unaware of the discharged flat batteries.
A lighting system such as the Magtenlight provides lights up day and night without having to switch it on and therefore will help to ensure maximum safety for the rider and particularly for children.
A statistical survey conducted in Scandinavia shows that a reduction of more than 30% in accident rate was achieved for those bicycles fitted with always-on front and rear flashing lights.

Flashing LED Lights
The rear red LED and front white LED are both recommended for all riders,day and night - for those who only occasionally ride a bike as well as for the experenced everyday commuters. A front flashing white light (and a rear flashing red light), though it makes you visible to others, will not light your way. If you are riding on an unlit path it is recommended, that you use a directional beam front light. When mounting flashing lights, make sure they face directly forward or backward as visibility is low when viewed from the side. The best place to mount lights is on the seat post, rack or basket (high enough, clear of any rack mounted packs), the seat itself, and the handlebars. Generally, the higher the mounting position, the better the result.
Magtenlight encourage the use of always-on lights.

Mounting lights on your bike
Care must be taken when mounting lights on your bike to ensure that they will not be hidden behind bags, clothing and other parts of your bike. They must be at right angles for the lights to be visible to other road users.
It’s also important that your lights are visible from the side, so if you fit your lights to your seat stay (the tube on your frame that runs from the rear wheel mounts to your seat post) make sure it is not obstructed by your wheel or a pannier bag.
Ensure that your lights are not obstructed by obsticles and are at the correct angle. Ask somebody to observe you when you are riding and have him or her confirm to tou the correct mounting of your lights.