Marketplaces and Product Quality
summary
Compares UberX and taxi trips in Chicago using phone telemetry to build a telemetry-based safety index that maps hard brakes, accelerations, phone handling and multiple speed percentiles into predicted star ratings. Matches ~80,000 taxi rides to UberX trips and analyzes an experiment with ~36,000 treated and ~24,000 control drivers. Finds UberX scores significantly higher, a 4.6 warning threshold (4.5, 4.4 deactivation levels) rarely threatens drivers, and nudges improve behavior mainly for drivers in the bottom 10th percentile.
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