Road safety experts are urging extra caution around schools, as more parents than usual are driving their children to school to avoid public transport.
There's also an increase in the numbers walking and cycling to school this year.
Mayo County Council's Road Safety Officer Noel Gibbons says drivers need to pay more attention around schools and follow speed limits in school zones.
Parents also need to watch where they park, when picking up and dropping off students.
Mr Gibbons says parents that park too closing to crossings or junctions, or stop in the middle of the road to let their child out can cause serious safety issues.
The Road Safety Officer warns that illegal parking also causes congestion and visual obstructions, making it hard for drivers to see pedestrians, and children crossing the street.
He's urging parents- where possible - to walk their children to school, and if this is not possible to ensure they leave more time for their journey.