Ontario’s chiefs of police are again sounding alarm bells about the impending legalization of recreational cannabis, saying federal funding for police operations may not go far enough to cover increased costs.

At a news conference held by the Ontario Association of Chiefs of Police in Toronto on Tuesday, Ontario Provincial Police Chief Supt. Chuck Cox said it’s fair to assume based on other jurisdictions’ experiences that drug-impaired driving will go up once recreational pot is legal, and police will need to train more officers to detect drug impairment.

That, Cox said, can be costly.

Police have been one of the key holdups in legalizing recreational cannabis: the Liberals initially promised to legalize it by July, but now say the deadline will be pushed back by several weeks, in part to give police authorities time to prepare for the new law.

“Federal and provincial legislation has and is being developed that will act as a deterrent and provide police with the powers to properly investigate and arrest drug-impaired drivers,” Cox said. “However, it is unclear how legalization will impact police from a day-to-day operations, including how it will impact, of course, police budget.”

He went on to say that forces may need more officers who are qualified drug recognition experts and certified to perform standardized field sobriety tests.

Police leaders are already working to “make training more readily available and reduce costs,” Cox noted.

In September 2017, the federal government pledged up to $161 million for training frontline officers in how to recognize the signs of drug-impaired driving, building law enforcement capacity, providing access to devices that help with drug screening, bolstering research and raising public awareness about the dangers of driving high.

Of that money, $81 million is to be provided to the provinces over the next five years, specifically for law enforcement training and building up capacity.

At the same time, the feds committed $113.5 million to Public Safety Canada, the RCMP and the Canada Border Service Agency for cannabis-related enforcement.

And earlier this year, the provincial government committed to give municipalities $40 million for marijuana law enforcement.