The IRHA President says it's not always possible to maintain the speed limit.
Tractors must be banned from using motorways to improve road safety, according to truck drivers.
The Irish Road Haulage Association is calling on the Government and Road Safety Authority to impose tighter restrictions.
Currently the law allows for machinery to use motorways if the vehicle can maintain a speed of 50 kilometers per hour.
IRHA Presdent and Rosenallis' Ger Hyland says that's not always possible, especially if the tractor is pulling a load:
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