Israel's army says troops have shot and killed a Palestinian woman after she purposely rammed her vehicle into an Israeli car, injuring two people in the West Bank.

The military says the woman "accelerated and crashed into a stationary vehicle" at the entrance to the settlement of Kiryat Arba. Forces opened fire and killed her. The two injured Israeli civilians were taken to hospital.

Friday's incident is the latest in nine months of dozens of Palestinian attacks, including stabbings, shootings and assaults using cars.

The attacks have killed 32 Israelis and two Americans. About 200 Palestinians have been killed during that time, most of them described by Israel as attackers. The rest died in clashes.

The assaults were once near-daily incidents but they have become less frequent in recent weeks.