T-12, r. 17 - Regulation respecting road vehicles used for the transportation of school children

Full text
18. A school bus shall have not more than 14 rows of seats. The seats shall be at least 380 mm deep.
The distance between the surface of a seat back and the seat back in front of it shall be not less than 600 mm and not more than 620 mm measured horizontally at the centre of the seat back.
O.C. 285-97, s. 18.