 Powered industrial trucks are rugged tools used to push, pull, carry, lift and stack materials. These machines include the tractors that pull luggage carts at airports, the all-terrain reach trucks operated on construction sites, and of course forklifts. All of these vehicles save us time, money and effort, but if they are not used correctly or maintained properly, they can be dangerous. OSHA's Powered Industrial Truck Standard covers how to work safely with these machines. One of the most significant parts of the regulation deals with training. Before you can use any type of powered industrial truck, OSHA requires that you be fully trained, evaluated and certified by a competent instructor. Your certification process includes instruction on safety procedures and training on how to operate the industrial trucks that you will be using. You will also have supervised driving practice. Your knowledge and ability will be re-evaluated at least once every three years. If necessary, you will undergo retraining at this time. OSHA also requires training anytime you are observed being unsafe. Have a close call or are involved in an accident. In addition, retraining is required whenever there is a change in your workplace that may affect your ability to operate a powered industrial truck safely.