In the first case, a 2010 Toyota Hilux rolled onto its roof at the bottom of the Rimutaka Hill on Wednesday afternoon.
The driver was the only person in the vehicle and had lost control about 4pm.
A tow truck was required and one lane was blocked.
In another instance, a man backed into a parked car in Chapel St, Masterton, about 7.30pm.
He was found to be intoxicated with 819mcg of alcohol per litre of breath and was charged with driving with excess breath alcohol.
Yesterday, a driver went through the fence and into a paddock in Burnetts Rd, Masterton, just before 6am.
Masterton Fire Service was also called to High St, Masterton, about 8.30am yesterday.
Station officer Kevin Smith said a small truck had hit another car.
There were no life-threatening injuries.
The road was temporarily blocked and caused delays to drivers.