Errors
Value of 15 m not in range.
5.7 The turning radius of the Yard Truck shall not exceed 15 m.
Comment - A Yard Truck inherits properties of non-articulated trucks. Trucks have turning circles of 12 to 20 m (diameter). Shifting the range from diameter to radius gives 6..10 m. 15 m is outside the range. Mistake is presumably specification of radius instead of diameter.
This assumes a fair amount of background knowledge about wheeled land vehicles has been provided.