The primary master switch must:
a. Be located on the (driver’s) right side of the vehicle, in proximity to the Main Hoop, at shoulder
height and be easily actuated from outside the car.

I have a doubt about this rule, the term shoulder height in this rule is pointing towards the shoulder height of the driver or a person standing next to the car. Since the height of main hoop is quite below the shoulder level of a person standing next to the car (also depends on the height of the person), the rule seems a bit vague. Is it against the rule to mount master kill switch in proximity to main hoop, at shoulder height of driver?