A bystander told Hawke's Bay Today the car appeared to clip the side of the pavement before flipping over and landing on its roof.
Fire services were at the scene directing traffic yesterday morning while the car was on the road.
The police spokesperson said the car had been taken away in a tow truck and the road reopened shortly after.
In September 2016 Hastings District Council installed four islands along Joll Rd, Havelock North, after being asked by residents to do something about drivers travelling the road over the speed limit.
The islands - located from the Tanner St intersection through to the Campbell St intersection - worked by narrowing the road width, encouraging drivers to slow down to negotiate the bends around them.
The council says the islands have reduced speed - traffic surveys before and after the installation of the islands showed cars were now travelling at between 48km/h and 52km/h, down from an average of nearly 60km/h.
However, since their installation they have raised concern among residents, and been called "concrete coffins", due to fears they would cause crashes in the suburban street.
In light of this, council announced last year it would be making modifications to the islands' design.
An audit into the work found there was concern that the islands were not 'mountable', with the centre piece having a sheer vertical face of 200mm.
Where possible, mountable traffic islands are designed to allow vehicles to travel over the edges of them. This gives drivers more room for error when driving around them.
Last August council began work to reduce the height of the centre pieces by half to 100mm and add sloped edges to ensure they are mountable.