Police are warning people about going onto closed roads after a local motorist drove onto the course yesterday.
They say the incident happened at around 7.30pm at Glentramman when a vehicle went onto TT course into the path of the Roads Open car.
Officers say a local driver is assisting with enquiries.
They're warning drivers, riders and pedestrians not to go onto the course until the Roads Open car has passed them - otherwise they're committing a serious offence and putting people's safety at risk.
Framework of new Sea Services Agreement ready, says minister
Attorney General says he's stepping down
Road closures in two towns for running event this week
Six weekend ferry crossings could face disruption
President of Tynwald announces retirement
Police close Mountain road
Fuel firm says "fingers crossed" for calmer energy costs
Ring doorbells will need data protection registration - but shouldn't cost you money