I-15 South

I-15 South carries the valley’s outflow — to the airport, to Henderson, to Arizona, and ultimately to Los Angeles. It’s the departure road, running hard all day and all night. The casino district interchange at Flamingo is the most chaotic section, where the Strip empties its evening crowds into freeway traffic. The southbound direction captures a specific dynamic that northbound doesn’t: the departure-after-drinking flow, where visitors who’ve spent days on the Strip funnel into rental cars heading for the airport or the state line.

The fatality trajectory on I-15 South is the dataset’s most encouraging trend: 11 deaths in 2022, 5 in 2023, 3 in 2024 — a 73% reduction. Crash counts have held relatively flat (1,254 / 1,294 / 1,225), suggesting the improvement is in crash severity rather than frequency, possibly from better emergency response or changed speed patterns. Hit-and-run rate at 22.2% mirrors northbound. Alcohol involvement actually increased from 58 in 2022 to 65 in 2024, the one concerning counter-trend in otherwise positive data.