The horn should be checked to make sure it's working properly and is of sufficient volume. Do not use a pallet truck without a working horn just because it doesn't travel very fast! Also check any instruments that may e fitted.Disclaimer. The legislative information contained on this web site is my interpretation of the law based on many years in the health and safety business. A definitive interpretation can only be given by the courts. I will therefore not be held responsible for any accident/incident/prosecution arising as a consequence of anyone using any information obtained from this web site.