MAIN Roads WA expects low severity crashes to increase since it installed new lights at the intersection of Old Coast Road and Mandurah Road, but severe traumatic crashes to reduce.
Before the lights were installed, 27 crashes occurred at the intersection in a five-year period ending in December 2015.
A Main Roads spokeswoman said of those recorded crashes, 11 were right angle type crashes, which present the greatest risk of trauma.
“Five of the recorded crashes involved trauma, two of hospital severity and three of medical treatment severity, and were all right angle type crashes,” she said.
“The installation of traffic signals is expected to greatly reduce the incidence of right angle crashes and hence greatly reduce trauma.
“It is likely however that the installation of traffic signals may actually increase the incidence of low severity rear end type crashes, however overall the signals will reduce the number and severity of trauma related crashes.”
Since the lights were installed there have been two crashes at the intersection.
On July 6, less than a week after the lights were installed, a Ford Falcon smashed into them.
No one was injured in this accident but the damaged traffic light has still not been fixed.
A second accident eight days later saw an elderly man roll his car at the lights.
The elderly man and a toddler were taken to Peel Health Campus for precautionary check ups.