Canada’s transport watchdog said on Wednesday it is concerned with part of the Canadian government’s response to the 2013 Lac-Megantic oil-by-rail disaster, which killed 47 people in Quebec. The Transportation Safety Board of Canada cited issues about Transport Canada’s oversight of railways. “We are concerned that the department has not yet put in place an effective oversight regime that guarantees all railways will be audited in sufficient breadth and frequency to ensure safety issues are addressed in a timely manner,” Kathy Fox, chair of the independent agency, said in a release. The safety board made five main recommendations to Transport Canada after the disaster, and it has been tracking the government’s progress, as it typically does after major accidents. The board praised Transport Canada’s initiatives to prevent runaway trains, saying that if the government’s recent proposals to standardize the use of hand brakes and require more physical defenses are made permanent risks will be reduced. It assessed those actions as “having satisfactory intent.” But it found a separate recommendation on Transport Canada’s oversight of railway safety management systems as only “satisfactory in part.” Canadian railways are required to create and maintain safety management systems, detailed sets of procedures and internal assessments meant to prevent accidents. Transport Canada audits those systems. In August, the safety board found that Transport Canada had not adequately audited Montreal, Maine and Atlantic, the railroad whose train derailed and exploded in Lac-Megantic. The railway did not have a functioning safety management system, the board found, and while Transport Canada identified some problems, it did not follow up adequately. The minister of transport, Lisa Raitt, said on Wednesday the department was making a “concerted effort” to address all issues raised by the safety board. “The department knows they have to work on this and they’ll continue to work on it,” said Raitt. “I take every recommendation and piece of advice from the TSB very seriously and we appreciate their work on it. There’s always going to be work to do on safety and they’re always going to have to work harder at Transport Canada and they will,” she said. Transport Canada has promised to respond to the recommendation in full, and it is preparing regulations that would make it possible to cancel railways’ operating certificates when they have inadequate safety systems. On Wednesday, the safety board said Transport Canada still has work to do. It said Transport has not committed to auditing every railway within a given time period, and thus problems might not be found quickly enough.