Reread that law - it applies to downgrades (which makes sense - engine braking to limit speed going downhill).
On the flat, going into neutral - while if it happens unexpectedly can be cause for concern (as you'll be rapidly slowing down due to wind resistance), it shouldn't harm drivability, braking, or steering.
Any issue with safety at that point would be on the driver in control of the vehicle, imho.
On the flat, going into neutral - while if it happens unexpectedly can be cause for concern (as you'll be rapidly slowing down due to wind resistance), it shouldn't harm drivability, braking, or steering.
Any issue with safety at that point would be on the driver in control of the vehicle, imho.