Posted By Trevor Pierce I work for a company that resurfaces highways, car parks etc. The noise levels on the machines are above the mandatory wearing levels of ear protection, but the use of ordinary earmuffs/ earplugs means that the operatives cannot hear instructions etc. Has anyone come across this problem before, and how did you solve this, (not necessarily in road construction!) If there has been previous threads in a similar vein, please point me in their direction. Thanks in Advance Trevor

Posted By Gerry Knowles In the past I have had excellent communication results in the textile industry with peltor communication muffs. They provide a high level of protection and have a built in but stand alone radio system. This means that you can have a very mobile network with a large number of users without the need for a base station. Gerry Knowles

Posted By Ron Hunter Applying a bit of lateral thinking? A jet pilot can't hear taxiying instructions, hence use of hand signals (Safety Signs and Signals Regulations)!