The importance of Thrust Angle in the vehicles.

 In the condition of left side automobile regulation like Japan and UK, plus value on thrust angle is nothing but fatal dangerous while driving in driver sleeping situation. Because, innate tendency to go right side has possibility of face to face collision. No argument is waiting for this critical opinion, because no vehicle driver has some experience including myself on this point. Right side run habit caused by plus thrust angle cannot be eliminated until thrust zero condition would be established even if EPS steering neutral correction should be done. So, the vehicle that lost control by driver's consciousness goes to right into the opposite traffic no matter how effort might be exerted. This fundamental physics mechanism is very seldom to be appear in the field of motor ;magazines. Just, the angle value of thrust angle must be within plus minus 10 minutes is said in the European Safety Bureau, in Japan, no regulation exist even in the periodical automobile inspection test done every 2 years. Scientific law in Physics on the Earth happens without exception no attention is paid or not.

Consequently, my Yaris that had plus thrust angle with 12 minutes angle value has corrected into 7 minutes by moving the left side hinge point forward within fitting tolerance.

Then next step is the right side trailing arm hinge point adjustment to backward.