A woman is facing drink-driving charges after driving over road cones cordoning off a crash scene in Hamilton and then demanding to know what police were doing.

Police had erected a cordon around the scene of a hit and run accident in the city on Friday evening, when the driver of another vehicle drove through and over the road cones.

The female driver, who had driven into a driveway and had a nearly empty bottle of wine in her handbag, demanded to know what the police were doing, Waikato road policing manager Inspector Leo Tooman says.

He said she refused to answer questions about whether she'd been drinking and tried to push past the officer to get inside the house before being arrested.

Insp Tooman says cordons are put in place to secure crime scenes and keep emergency services staff, and other road users, safe.

"Motorists need to be aware that if they choose to ignore these cordons they not only put themselves at risk, they [may] face serious charges."

Meanwhile, a 20-year-old man involved in the earlier incident will appear in Hamilton District Court on Thursday on a number of charges.