For the second time in a week, the US government’s road-safety agency is sending a team to investigate a Tesla crash in Michigan. The National Highway Traffic Safety Administration is getting involved because a car using the company’s Autopilot system collided with a State Police cruiser with flashing lights along a freeway. It's another sign that the safety agency under President Joe Biden may be taking a stronger look at regulating driver-assist systems, as well as self-driving cars. Previously, it had taken a hands-off approach to the new technologies, favouring voluntary safety compliance so it wouldn't interfere with development. In the freeway incident, the police car was parked on Interstate 96 in Eaton County near the state capital of Lansing while a trooper investigated a car-deer crash early on Wednesday, WLNS-TV reported. Neither the trooper nor the 22-year-old Tesla driver were injured in the 1.10am crash. The officer issued citations for failure to move over and driving with a suspended licence. In a statement, NHTSA said it would send the team to investigate “consistent with NHTSA’s vigilant oversight and robust authority over the safety of all motor vehicles and equipment, including automated technologies”. An email message seeking comment on Wednesday night from Tesla was not immediately returned. The manufacturer has disbanded its press office and has not returned messages for months. Earlier this week NHTSA sent a special crash investigation team to Detroit for a crash that involved a Tesla that drove beneath a semitrailer. Two people in the car were hurt in the incident last Thursday on the city’s southwest side. WJBK-TV quoted a Detroit police deputy chief as saying all indications are that the car was not in Autopilot mode. The circumstances of the Detroit crash were similar to two others in Florida in which Teslas drove beneath tractor-trailers, causing two deaths. In both crashes, in 2016 and 2019, the cars were being driven while using Tesla’s Autopilot system, which can steer a car to keep it in a lane and stop it from hitting vehicles in front of it. NHTSA's moves to send teams to both crashes indicates that it may be taking a different stance on automated driving systems, said Sam Abuelsamid, principal analyst for Guidehouse Insights. “It seems that under the new administration, NHTSA has finally started to take a serious look at this,” he said. NHTSA has previously investigated more than a dozen Tesla crashes, but hasn’t made public any action. In January, before Mr Biden took office, it threatened a public hearing and possible legal action to get the Palo Alto, California-based company to recall vehicles for a touch screen problem. Tesla has said previously that its Autopilot and its “full self-driving” software are driver-assistance systems and that the driver must be ready to intervene at all times. Tesla has been criticised by the National Transportation Safety Board for failing to adequately monitor drivers to make sure they are paying attention. The NTSB, which investigates crashes and makes recommendations, also criticised Tesla for allowing the system to work on roads that it can’t handle. Mr Abuelsamid said a February letter to NHTSA from NTSB Chairman Robert Sumwalt urging regulation of the new systems may have prodded NHTSA into taking more action. “Hopefully we will finally see NHTSA establish standards” for driver assist systems, he said. Jason Levine, executive director of the nonprofit Center for Auto Safety, said it's about time NHTSA starts to get serious about the risks posed to all motorists by companies such as Tesla, “who are intentionally misleading the public regarding the capabilities and shortcomings of their technology”. Under President Donald Trump, NHTSA either could not or would not take action, Mr Levine said. “We can only hope the era of vehicle safety being an afterthought is over.”