The Engine Immobiliser: A Non‐starter for Car Thieves
研究欧盟强制新车安装电子发动机防盗锁止器的政策效果，发现该装置使汽车盗窃案减少约40%，每安装34辆车（成本50欧元/辆）可避免一次盗窃，对政策制定者和保险公司有参考价值。
We provide evidence for a beneficial welfare impact of a policy targeted at strengthening victim precaution. Regulation made application of the electronic engine immobiliser mandatory for all new cars sold within the European Union. We exploit the regulation as source of exogenous variation in use of the anti-theft device. The device reduced car theft by an estimated 40%, accounting for both the protective effect on cars with the device and the displacement effect on cars without the device. 34 cars need to be fitted with the device (at a per unit cost of 50 euros) to avert one theft.