The goods or materials being transported need to be protected against theft and improper manipulation or transportation conditions.
In order to keep your cargo and materials safe, you may need to monitor not only access to the cargo, but also the conditions under which the cargo is being transported. For instance, food and beverages as well as pharmaceutical products, must be transported, handled and stored in a manner that mitigates the risk of exposure to temperatures outside labelled storage conditions, which would potentially result in very high losses or damage claims from your clients.
In such cases you would need to monitor also temperature, from the moment each vehicle departs until the goods are delivered.
Moreover, in the event a vehicle is stolen, you want to be able to locate it and recover it as soon as possible, in order to avoid losing the cargo.