It has the potential to cause an accident as well, and when buses start crashing, the risk of injury and death rises.
Find the kids, and punish them?
Buses are a peculiar bedfellow with an environmental watchdog, but public transport falls under the auspices of the Northland Regional Council.
It so happens that one of the elected NRC councillors is a former police officer, Paul Dimery, and experienced in solutions for community challenges.
Which must have had a bearing on the approach that is being taken. Yes, the incidents have been reported to police. But a meeting has also taken place with community leaders, and a community day is being planned, to expose the buses to kids in a manner which will hopefully not result in someone peppering them with rocks.
The bus drivers are supportive of the idea - it might just work.
The kids obviously have a disconnect with the buses, and the people inside them.
A community discussion is a step closer to creating that connection and will help the young vandals "humanise" the inanimate objects that roll through their streets. Beyond the buses, it might also highlight demand for a service or recreational asset in Otangarei.
Otherwise the kids might just find something else to throw rocks at.