MORE than 2400 motorists have been caught speeding on Port Wakefield road in the past 12 months and that figure is expected to spike when new point-to-point cameras start operating. The devices, also known as average speed cameras, are expected to be operational by the end of the year on Port Wakefield Rd and the Dukes Highway.
The system involves measuring the time taken by a vehicle to travel between two camera sites.
The average speed of the vehicle is calculated by dividing the distance between the cameras by the time taken for the vehicle to travel between the sites.
If the average speed of the vehicle is in excess of the speed limit, the vehicle is recorded as having committed a speeding offence.
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The cameras will also be able to detect a vehicle's actual speed at each location.
A Transport Department spokeswoman said that despite the complexity of the technology, the system left no room for error.
"The technology used to detect average speed is extremely accurate," she said.
"The distance used when calculating a vehicle's average speed across an average speed safety camera enforcement length will be the shortest practicable distance, which ensures that there is no possibility that a driver's speed can be over-estimated. A registered land surveyor has certified the travelling distance accurately."
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Other locations set to receive point-to-point cameras include Victor Harbor Rd, the South East Freeway, Northern Expressway and Sturt Highway.
The Transport Department says the cameras will bring immediate benefits.
"Reductions in average travel speed across the network is the most effective and swift way to reduce road trauma and would produce significant and immediate road safety benefits," the spokeswoman said.