Electric Lighting Equipment on Automobiles

The convenience and flexibility of electric lighting is the principle reason for the development of the present type of automotive electrical equipment. The conflicting requirements of good illumination for the drivers and the elimination of glare for the driver of the on-coming car have lead to the adoption of light-directing devices according to specifications drawn up by the I. E. S. Lights conforming to these specifications give good results under ideal conditions but under bad road and car springing conditions cause a great deal of discomfort to the drivers of on-coming cars and considerable dissatisfaction with the results. There is a great need of improved result. The possibility of obtaining improved result by the use of polarized light, by the means of light filters, by the use of more diffused light, is discussed very briefly.