3. Be convinced, that at switch keeping in this position speed increases, and at отпускании speed of the car remains to constant and equal speed for a moment отпускания the switch.
The prevention
Even if at dispersal speed will reach limiting value of 145 km/h (200 km/hour for а/м 1992-98) dispersal will proceed all the same. After отпускания the switch speed will slowly return to limiting value.