It is necessary to protect license plates. The simple reason is that one may buy and sell vehicles during his lifetime but the license plates are for life. Should they be damaged in any way and the registration number cannot be read then such plates could be considered invalid and the driver may be penalized.

License plates are susceptible to damage. If a car owner lives in a rural area and drives on rough roads and across rough terrain there is every possibility that flying rocks and pebbles can damage the plates. If the track is muddy then the plates may become mud-splattered. Mud may contain some corrosive chemicals that will cause faster corrosion of the material and also contribute to peeling off the paint and coating on the plate. Dust accumulates over time. Those who live in areas where it snows will find that snow and ice can contribute to deterioration of the license plate. If one drives on the roads during daytime then it is a given that the plates will be exposed to UV radiation. UV rays cause fading and faster deterioration of coatings on the base material. All these can be avoided by fitting suitable license plate protectors made of clear or slightly tinted acrylic.

It does not cost much but a good quality clear license plate protector made of high grade UV resistant acrylic offers advantages:

• UV resistant acrylic transparent protectors protect the plates from damages caused by UV radiation. Over time the acrylic may become damaged due to weathering effects but the plate underneath remains in pristine condition. License plates are for life and these covers offer protection for years against sunlight damage.

• Weathering is another reason for damage to the license plates. Oxidation and moisture as well as chemicals present in the air can lead to deterioration of coatings and the result is that the plate becomes damaged. Acrylic covers prevent any air from reaching the surface of the plates and the coatings remain intact for a longer period.

• It is to be expected that driving on roads causes pebbles to fly and some of these may strike the license plates and damage the surface so badly as to make it difficult to recognize the number with the result that police may consider this a violation. Simply installing acrylic transparent covers protects the license plates for a long long time.

• When it rains your plates are likely to become wet and splattered with mud. Cleaning can be a chore. If acrylic covers are installed the benefit is that it is easy to wash and clean plastic transparent covers and keep the underlying plates intact.

These are the advantages of installing cheap and affordable transparent or tinted covers for license plates. One can also buy high tech acrylic clear covers that offer protection traffic cameras. Such covers obscure a part of the registration number by causing a glare or reflecting light in a particular way so that the entire number is not legible and the computers cannot issue a ticket. This type of cover may not be entirely legal or acceptable in some parts of the country.

However, there is no law against using clear UV resistant acrylic covers to protect license plates. 

Article resource: http://www.sooperarticles.com/automotive-articles/what-advantages-license-plate-covers-your-vehicle-1571504.html