Developed specifically for the rigors of the courier market; Vanlok Pro slamlocks operate by giving additional security as soon as the door is slammed shut. Thus requiring re-introduction of the high security slamlock key each time the door is to be opened. This means that the driver can no longer forget to lock the van door even for a minute, as the slamlock will never forget. Health and safety legislation is also catered for by the implementation of internal escape from van load compartments, if the operator is to accidentally lock himself inside.