Drivers at the Carterton roundabout flinched and ducked as a trailer-load of hay bales tumbled off a toppling trailer on Friday night.
About 6pm a Gray's Contracting Ltd truck, turning right from Masterton, blew a tyre on its rear trailer as it was negotiating a hard turn at the roundabout.
Around 20 bales toppled into the street and sidewalk as the trailer turned on its side, with one smashing the shopfront window of Headquarters Hairdressers.
The hairdressers had been closed at the time, and no one was hurt in the incident.
Carterton resident Fran Jenkins was in her car at the roundabout and was giving way to the truck when bales started coming towards her.