Someone was busy this weekend... NewsReport Code: A COVERT police operation has caught motorists, including many motorcyclists, using a road in the Adelaide Hills as a race track. Assistant Commissioner Grant Stevens has said 367 motorists were caught speeding along the Cudlee Creek Road last weekend. Of those, 27 were classified as dangerous with a speed at least 45kph over the limit, with 19 of the 27 being motorcyclists. A further 28 were high speed offences (30-45kph over the limit) and of those 18 were motorcyclists. "We detected two motorcyclists on the Lobethal to Cudlee Creek Road on Saturday morning exceeding the speed limit by 78 and 72kph respectively," Mr Stevens has said. "Another motorcyclist was detected twice on Sunday morning travelling around 60kph over the speed limit on both occasions." Mr Stevens has said covert operations, with speed cameras concealed in various locations, will continue in the area. There have been 197 serious injury and casualty crashes and seven deaths on roads in the area since 2001. "A range of different methods will be used to conceal the cameras in these locations and severe penalties will apply for anyone detected using our roads as a race track," Mr Stevens has said. "Police make no apologies for covert road safety operations involving concealed cameras in blackspot areas, because our aim is to take dangerous riders and drivers off our roads before they kill or maim someone." Police have previously expressed concern at the number of motorcyclists killed on the state's roads - 19 have died so far this year, a 35 per cent increase compared to the same period in 2005.