49. In any proceeding instituted under this division, the operator of an establishment where the offence has been committed or the carrier whose vehicle was used for committing the offence is liable to the penalties imposed for an offence under this division, even if it has been committed by another person and even if it cannot be proved that such person was acting under the direction of such operator or carrier.
Proof that the offence was committed by a person in the employ of such operator or carrier is conclusive evidence that the offence was committed with the authorization and under the direction of the operator or carrier, as the case may be.