Regarding the influences of the driving environment on the perception of movement and speed, if you are driving on a narrow road bordered by tall vegetation:
The characteristics of the environment do not influence the perception of movement and speed, so this is not something that you should take into account to circulate safely .
You will tend to perceive a higher speed than if the road is wide and there are hardly any elements on its margins .
You will tend to perceive a lower speed, so it is very likely that you will travel at more than 180 km / h .