Road users are being urged to exercise tolerance on rural roads.
Spring and early summer are particularly busy seasons for farmers, with lots of tractors and large vehicles on country roads.
Road Safety Officer with Mayo County Council, Noel Gibbons, said this can slow things down - but drivers should be patient.
"Farm activities continue on throughout the day," he said. "We're asking farmers to be aware of the different times people may be travelling to and from work, but it isn't always possible for farmers to restrict their activates.
"We're appealing to motorists to understand that farming activity has to continue."