What is the proper procedure for putting a car into the shop building?

The proper procedure for putting a car into the shop building involves stopping at the door and sounding the horn. This action serves multiple important purposes. First, it ensures that any personnel or equipment in the vicinity are aware of the approaching vehicle, thereby enhancing safety. By alerting others, the risk of accidents or injuries is minimized, particularly in environments where visibility may be limited or where people might be working near the entrance.

Additionally, sounding the horn is a customary communication signal that indicates the operator is about to enter the shop. It allows for any necessary preparations to be made inside the building, such as ensuring that the doors are completely open and that there is no obstruction in the pathway. This procedure is an essential part of operating within a shop to maintain efficiency and safety protocols.

The other choices do not align with established safety and operational standards. For instance, proceeding at full speed would disregard safety considerations, while waiting for authorization may not be necessary in every situation, and pushing a button related to a blind automatic signal lacks context and may not be relevant to the entry procedure.