Dear participants,
 
welcome to the survey as part of my master's thesis.
Road safety in nighttime traffic is largely dependent on the headlight illumination quality. 
For this reason, Audi AG and I would like to use this questionnaire to obtain detailed information about which headlight distribution is the optimum choice in certain situations.

Completing the questionnaire will only take a few minutes of your time. Your answers will be recorded and evaluated anonymously.

Some terms that are important in this survey are defined in advance:

1. Luminous range
The luminous range is the maximum distance at which the light from the headlight is visible before it becomes too weak to be perceived as sufficiently bright.

2. Road brightness
The road brightness describes the intensity of the headlight illumination on the road surface.

3. Homogeneity
The homogeneity describes the uniformity of the light distribution.

4. Illumination width
The illumination width indicates the width of the illumination in front of the car. 



I would like to thank you in advance for taking part in this survey.

I hope you enjoy my survey!

Yours sincerely,
Maximilian Felber