Driving performance

Wheel alignment and axle constructive geometry are the indispensable requirements to be fulfilled to drive an automobile comfortably. The thrust angle is the most important one that has been defined plus minus 10 degree on European Traffic Safety Standard.

So there are various habit tendency to run right or left side unintentionally, they are all automatically adjusted to run straight by special device, driver's unconscious steering adjusting capability.
Then an automobile may exist to run straight without adjusting if so many automobile exist with either habit to run right or left?
This is my first imagination to start researching on wheel alignment and on geometry over 10 years ago.
It was the target that the reproducibility of measurement and obtaining reliable datum.

Recently I have come to the conclusion that the actually dynamic establishment of wheel alignment cannot be attained till I measure the discrepant value should be known on steering position while actual running scenery and adjusted based on the data measured from frontal portion as relative to its location, the static balance in stable position and the dynamic one while driving are different each other.