http://www.fis-ski.com/mm/Document/documentlibrary/Snowboard/05/56/03/SB_FIS_ICR17Snowboard_English.pdf
Photocells
For all competitions, there must be two photocell system(s) homologated
by the FIS installed at the finish line. The cells are placed in such a height
that a competitor finishing normally cuts the beam with the lower half of his
legs, between the ankle and the knee.
... dolní polovina nohy mezi kotníkem a kolenem
Prosím o prověření
Jura | 27.02.2018