A warehouse can have multiple shipments. However, a shipment can only belong to one warehouse.
A driver can drive multiple vehicles. However, a vehicle can only be driven by one driver.
A vehicle can transport multiple shipments. However, a shipment can only be transported by one vehicle.
A shipment can be transported by multiple drivers. However, a driver can only transport one shipment.
A driver can work in multiple warehouses. However, a warehouse can only have one driver.
A vehicle can be parked in multiple warehouses. However, a warehouse can only have one vehicle parked.
A warehouse can have multiple drivers. However, a driver can only work in one warehouse.