Why Better Safety Technology Does Not Always Reduce Deaths
Coal mines used roof-bolting technology to lower costs while preserving their accustomed level of danger rather than spending more to maximize safety. The discussion connects this behavior to the Peltzman effect, in which people consume safety gains by taking additional risks.
- Roof bolts connect unstable rock to more stable layers
- Mining companies used the technology primarily to reduce costs
- Competitive pressure discouraged individual firms from spending more on safety
- Workers and operators had acclimated to an existing level of risk
- Drivers may similarly respond to safer cars by driving faster
“they maintain the same level of mortality, like the same level of risk. It's just less cost”
“They make us complacent and comfortable, and so we drive faster, and the fatality rates are the same.”