Chipped windscreens should not be ignored. What is visible to the naked eye is in fact a collection of multiple fissures in the glass. A particularly bad bump can in fact cause the centre of the chip to crack and radiate outwards dramatically, to the point where the damage, instead of being marginal, has become a borderline cause for windscreen replacement.
Since a chipped windscreen could develop into a crack any time, it's important to repair a windscreen chip as soon as possible. Repairing the damage immediately will prevent residue and minimise debris from permanently degrading the windscreen, where the resin might fail to adhere properly because of dirt. Windscreen repair kits are available online for a very low price and these kits come with everything you will need to do the job yourself. If the chipped area is not too large, many of these kits can be used more than once. Repairing a chipped windscreen can be done in about half an hour, after which the vehicle will be ready to drive. Basically, windscreen repair kits contain a special resin which you apply to the windshield. This resin reacts to ultraviolet light which means that it will dry by itself in normal light conditions. Professional repairers use a special UV light to cure the resin but DIY kits are specially formulated to work in normal sunlight.
Repairing a chipped windscreen is not hard to do and if you follow the kitís instructions, you may be able to perform a successful repair job yourself. Just remember that preparation is the most important job of any repair and do your best to clean the chipped area of dirt and debris. Note that the resin will restore only 90% of windscreens transparency at best, so if the damage is directly in the line of sight of the driverís vision, it is best to have the windscreen replaced.