http://www.heraldsun.news.com.au/common/story_page/0,5478,18699798%5E2862,00.html AN enraged motorist has sped head-on at a car and made chilling threats in the latest wave of attacks on speed camera operators. A day after that incident last month, a driver of the same car made cut-throat gestures at another operator. Police are investigating the allegations reported by speed camera operator Tenix. Shortly after 4pm on March 17, the driver of a silver Holden Commodore sped towards a camera on Broadmeadows Rd, Tullamarine, and braked suddenly before verbally abusing the operator. The driver sped off, braked suddenly again and reversed to resume the diatribe. "Don't worry mate I know where you are. I'll find out where you live. I'll get you, you better believe it," the driver said. The next day, March 18, the same silver Holden was driving on Sharps Rd, Tullamarine, along with a camera car about 10am. At one stage, the Holden and the camera car were stationary side by side, waiting to do a U-turn, when the Holden driver made a cut-throat gesture. The Holden followed the camera operator to a Tenix office in Barrie Rd. According to the incident report, the driver pointed at the building "as if to say I know where the speed cameras are". "I was concerned for myself due to his hostile actions," the operator said in his incident report. "I reported the incident to my team leader and was shocked to hear that the same vehicle and person was involved in an incident with another camera car the previous day." Tenix declined to comment on the incidents, which have been reported to police. But it is understood the number of attacks on operators has increased significantly after bad publicity over the Western Ring Rd fixed speed camera debacle.