Yes in some countries, most notably Saudia Arabia, if someone rear ends your car, he's at fault... NO MATTER WHAT! Specially, if the car behind is driven by a 'dirty' Pakistani/Indian/South Asian, and the car up front has a Saudi Citizen, or worse, A PRINCE on-board! To them, we're annoying pests sucking on their economy...!
Anyhow, Whereas in Western Countries, insurance companies deploy 'DETECTIVES' to determine the reason behind the collision and which driver is at fault, provided its not already taped by a CCTV Camera... Which are literally everywhere in prominent and extremely populated cities like London for example! Reason? There, all cars are insured! Unlike here where man grab other man with his collar and humiliate him in the middle of a congested road...
Anyhow, hope you find it helpful...