U.S. Homeland Security Secretary Michael Chertoff confirmed Thursday that Canadians can use enhanced driver's licences when entering the U.S. by land crossings.

Canadian officials had been pressing for an alternative to passports, saying they are expensive.

While Washington's decision on the Western Hemisphere Travel Initiative is due soon, Chertoff indicated the new high-tech licences would be approved.

"Next year, we'll be implementing a rule in stages that will require … either a passport, a passcard, Nexus card or enhanced driver's licence to cross the land border," he said during a speech to a Washington trade symposium hosted by the U.S. Customs and Border Protection agency.

Such licences, which aren't yet available, would contain proof of citizenship.   

Several provinces, including Ontario, Quebec and Alberta, are keen to develop the required licences.

Ontario Transportation Minister Jim Bradley said Chertoff's comments mean the provinces can take the next step in discussions with Ottawa about the new licences. 

A project using high-tech licences at border points between British Columbia and Washington state is expected to start early next year.

Air travellers entering the U.S. already need passports.