Final answer:
Regarding the responsibility for wrong placards on a vehicle, it is generally the shipper's responsibility to ensure proper placarding. Both drivers and carriers must also ensure compliance with regulations. The statement about displacement appears unrelated and requires further context.
Step-by-step explanation:
The statement 'It is the shipper's fault if the wrong placards are on the vehicle' can be a bit complex to navigate without specific context, but in general, the responsibility for ensuring that hazardous materials are properly placarded falls on the shipper. However, drivers and carriers also have a duty to check for compliance before and during transport. With hazardous materials, strict regulations are in place to ensure safety and compliance. The placards are an essential part of this system, providing crucial information about the nature and risk of the cargo to anyone who might come into contact with the vehicle.
Now, regarding the second statement, 'displacement will be the same as it would have been had he followed directions correctly', it seems unrelated to the question about placarding and may pertain to a different context, possibly a physical science or logistics scenario concerning the movement or placement of an item or substance. Without additional context, it's difficult to assess the accuracy of this statement.