Accessibility of motor is very good, since trucks can come and pick up the goods from shipper right the same place the shipper locates. This saves time and money for shippers. Capability is not very high, compare to railroads and water carriers. A truck can take only so much. But of course you need to transfer a lot of goods and you have to use motor, than you just need more trucks, therefore it is more costly. The security for motor is pretty good, because new technologies made truck routes more smooth, where water depends on weather a lot and railroads are not as smooth.
3. Air carriers are mostly used to carry passengers and the cost to transfer goods is very expensive, it is the most expensive way ship goods. One of the best things about air carriers is that they are very quick in transit time. Weather is also playing a big role in reliability, depending on weather conditions the shipment could be delayed, therefore it reflect the inventory level. Capability is not very high, due to the high cost and space availability on the plain. Accessibility is also is not very good, since the shipper first must use another transportation to deliver goods to the airport. The security is high, because plane rides are usually very smooth, because they were designed to move passengers, you could say that those goods are treated at the same level as the person who is on that plane.
4. Water carriers are usually long distance and low value. Those products could be agricultural, forest, oil, etc. The cost to use water is pretty low, because you can ship large quantities of goods and get somewhat of a discount. Transit time is long; it even could be that it is the slowest way to ship your goods. Weather also affects water carriers as any other transportation; weather conditions could delay the delivery of the goods. Capability is high, as I mentioned before that you can load large quantity of goods on the ship.
