(8) Except in the case of a bus, if the distance between the rear
ward surface of the front seat back of the vehicle and the forward surface of the rear
seat back of the vehicle is less than 720 mm, as measured in accordance with Figure 6, and if the vehicle is equipped with the manual cut-off switch referred to in paragraph (2)(c), a lower universal anchorage system may be installed at a passenger designated
seating position in the first row of designated
seating positions instead of at a designated
seating position located to the rea
...[+++]r of the first row of designated seating positions.