Sure they can. It's called a collision study. How many lives does it cost to get to where California already is?
Thing is there are collision studies already showing that rear end collisions are the most prominent type of collision in Toronto
[TABLE="width: 680"]
Table 3.4: Initial Impact Type by Class of Collision, 2010[TR]
[TH] [/TH]
[TH="colspan: 3, align: center"]Class of Collision[/TH]
[TH="align: right"] [/TH]
[/TR]
[TR]
[TH]Initial Impact Type[/TH]
[TH="align: right"]Fatal[/TH]
[TH="align: right"]Personal Injury[/TH]
[TH="align: right"]Property Damage[/TH]
[TH="align: right"]Total[/TH]
[/TR]
[TR]
[TD]Approaching[/TD]
[TD="align: right"]112[/TD]
[TD="align: right"]755[/TD]
[TD="align: right"]1,452[/TD]
[TD="align: right"]2,319[/TD]
[/TR]
[TR]
[TD]Angle[/TD]
[TD="align: right"]65[/TD]
[TD="align: right"]4,602[/TD]
[TD="align: right"]11,817[/TD]
[TD="align: right"]16,484[/TD]
[/TR]
[TR]
[TD]Rear End[/TD]
[TD="align: right"]29[/TD]
[TD="align: right"]12,881[/TD]
[TD="align: right"]50,435[/TD]
[TD="align: right"]63,345[/TD]
[/TR]
[TR]
[TD]Sideswipe[/TD]
[TD="align: right"]14[/TD]
[TD="align: right"]2,944[/TD]
[TD="align: right"]20,358[/TD]
[TD="align: right"]23,316[/TD]
[/TR]
[TR]
[TD]Turning Movement[/TD]
[TD="align: right"]40[/TD]
[TD="align: right"]10,139[/TD]
[TD="align: right"]31,352[/TD]
[TD="align: right"]41,531[/TD]
[/TR]
[TR]
[TD]With Unattended Motor Vehicle[/TD]
[TD="align: right"]8[/TD]
[TD="align: right"]467[/TD]
[TD="align: right"]13,300[/TD]
[TD="align: right"]13,775[/TD]
[/TR]
[TR]
[TD]Single Motor Vehicle[/TD]
[TD="align: right"]266[/TD]
[TD="align: right"]12,457[/TD]
[TD="align: right"]39,219[/TD]
[TD="align: right"]51,942[/TD]
[/TR]
[TR]
[TD]Other[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]185[/TD]
[TD="align: right"]2,636[/TD]
[TD="align: right"]2,821[/TD]
[/TR]
[TR]
[TD]Unknown[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[/TR]
[TR]
[TD]
Total[/TD]
[TD="align: right"]
534[/TD]
[TD="align: right"]
44,430[/TD]
[TD="align: right"]
170,569[/TD]
[TD="align: right"]
215,533[/TD]
[/TR]
[/TABLE]
What they CAN'T do though is what UC Berkeley did, which is include filtering collisions into their data