Is it legal for an adult to ride in the back of a pickup truck in Florida?

In Florida, it is generally legal for adults to ride in the back of a pickup truck, but there are specific conditions. Riders must be at least 18 years old, and the vehicle must be traveling at low speeds, typically under 15 mph, or on a designated roadway where such riding is permitted. Additionally, local ordinances may impose further restrictions, so it's important to check local laws before doing so. Always prioritize safety by using appropriate restraints when possible.