The risk of vibration injury is dependent upon the overall vibration to which you are subject over an 8-hour working day. The limit on how much vibration you can be exposed to over a working day is 5 m/s². This limit is absolute and must not be exceeded As a rule of thumb, injury can be avoided if your daily exposure to vibration does not exceed 2.5 m/s².

A vibration load of 2.5 m/s² is equivalent to you being exposed to a constant vibration level of:

• 2.5 m/s² for 8 hours
• 3.5 m/s² for 4 hours
• 5 m/s² for 2 hours
• 7 m/s² for 1 hour
• 10 m/s² for 0.5 hour