The Diisocyanate Driver's License is a special training course that teaches employees how to safely handle products containing isocyanates, which are often used in industrial manufacturing. The training includes knowledge about the health risks of isocyanates, the use of personal protective equipment and the safe handling of the chemicals. After successfully completing the training, employees receive a certification that serves as proof of their skills and knowledge. The diisocyanate driving license is required by many employers to ensure that their employees are able to handle isocyanates safely and thus avoid injuries or damage to health.