Teletrac Navman has ranked the most dangerous highways in America by assessing four years of fatality rates over certain stretches of highway and calculating the number of vehicle-related deaths per mile.

Interstate-4 in Florida – specifically the 132.2 miles connecting Tampa to Daytona Beach – is the only roadway in the report averaging more than one fatality per mile. From 2016 to 2019, 150 people were killed there in collisions, including 11 in Orlando, alone, making it the deadliest highway in America for the second time in a row. In 2015, it held the same distinction with 165 reported fatalities, in a five-year survey.

Interstates-45, 192 and 17 in Texas, Florida and Arizona, respectively, each held their ranks as the second, third and fourth deadliest highways since 2015, the report found. Ten highways fell from the top 25, notably I-84 from Pennsylvania to Massachusetts which plunged 51 places – the biggest statistical improvement in the study, the company says. Additionally, I-78 from Pennsylvania to New York City, which had been in the top 10, dropped 30 places – the second-biggest statistical improvement in the study. Two of the longest highways in the nation, US-1 and I-40, dropped from the list.

“There have been significant technological improvements to automobiles, greater vehicle and driver connectivity and heightened awareness around safety standards, but we continue to see significant road fatalities,” said Ben Williams, director of marketing, digital and analytics for Teletrac Navman. “This study highlights the need for all drivers – passenger and commercial – to continue to stay vigilant to protect people on the roads.”

The Teletrac Navman report, which pulls from the Fatal Analysis Reporting System (FARS) data from the National Highway Traffic Safety Administration (NHTSA), also analyzes the main types of collisions and where along each stretch of road the most lives were lost.

According to the report, the 10 most dangerous highways in America (and the deadliest city on each highway) include:

• Interstate 4 has 1.134 deaths per mile of highway, and the deadliest city is Orlando, FL with 11 deaths.
• Interstate 45 has 0.913 deaths per mile of highway, and the deadliest city is Houston, TX with 92 deaths.
• Route 192 has 0.867 deaths per mile of highway, and the deadliest city is Kissimmee, FL with 10 deaths.
• Interstate 17 has 0.707 deaths per mile of highway, and the deadliest city is Phoenix, AZ with 39 deaths.
• Route 92 has 0.706 deaths per mile of highway, and the deadliest city is Tampa, FL with 18 deaths.
• Interstate 12 has 0.666 deaths per mile of highway, and the deadliest city is Baton Rouge, LA with 13 deaths.
• Interstate 30 has 0.646 deaths per mile of highway, and the deadliest city is Dallas, TX with 34 deaths.
• Interstate 95 has 0.637 deaths per mile of highway, and the deadliest city is Jacksonville, FL with 48 deaths.
• Interstate 19 has 0.631 deaths per mile of highway, and the deadliest city is Sahuarita, AZ with 7 deaths.
• Interstate 85 has 0.613 deaths per mile of highway, and the deadliest city is Charlotte, NC with 30 deaths.