It’s a tricky question, but a new study shows which highways in the United States are the most and least dangerous, and the answers can be shocking.
It was released this week by a consortium of public health researchers led by University of Michigan epidemiologist Mark Pomerantz, who was recently named the winner of the 2014 Pulitzer Prize for Public Service.
The results were released Thursday, with the full report online.
Pomerantz and his colleagues found that New Jersey is one of the nation’s most dangerous highways, with a speed limit of 70 mph.
The speed limit in Massachusetts, meanwhile, is only 60 mph, and Pennsylvania’s is 60 mph.
“The highway speed threshold is a measure of how quickly an automobile can travel,” Pomeranz said in a statement.
“The lower the speed threshold, the greater the danger of injury or death.
The highway speed test is an effective tool for road safety, but it has limitations.”
The study is the first to assess the speed limits in different parts of the United State.
The researchers looked at the speed limit on U.S. roads in 2016, using data from the National Highway Traffic Safety Administration (NHTSA) and the National Center for Transportation Statistics (NCTS).
The data includes all roads in the U.N. Region.NHTS and NCTS do not collect data for highways in Texas and New Mexico.
Pomerants study included data for all roads across the U, with New York, Pennsylvania, and Texas being excluded.
The researchers also looked at whether speed limits were being increased or decreased by state.
For New Jersey, New Mexico, New York and New York City, the speed thresholds were increased and decreased, respectively.
Pennsylvania and New Jersey had speed limits that were increased or lowered by no more than 5 percent, 10 percent or 15 percent, respectively, of their national speed limits.
Pomersantz said he was particularly struck by how much the speed test affected how states have changed their speed limits since the 1960s.
“We are seeing changes over time in New Jersey and in Pennsylvania, but we see a lot of variability in New York,” he said.
“We see a significant number of cities that are going from a higher speed threshold to a lower threshold.”
“The more you can make a road more or less dangerous, the less dangerous the road becomes,” he continued.
“What we’re seeing is that the highway speed thresholds are actually increasing, but the speed levels that are being implemented are increasing at a much higher rate than the actual speed of the vehicles involved.
That has implications for safety in the states.”
The research was published in the Journal of Public Health.
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