We're having more car accidents

More jobs, more driving, more crashes

While it's impossible to say precisely what's causing more traffic deaths and injuries, the NSC says a stronger economy, lower gas prices and lower unemployment rate are leading to more people on the road. "More people can afford to drive, and many travel longer distances and take vacations," the NSC said in a news release. The increase in driving has been accompanied by 18,630 motor vehicle deaths for the first six months of the year, according to the NSC. That compares with 16,400 deaths during the same period last year. If the rate of fatalities continues, the number of deaths would exceed 40,000 for the first time since 2007.

The number of injuries from motor vehicle accidents in the first six months of the year that resulted in a medical consultation jumped to 2.25 million, up 30 percent from 2014. "Traffic deaths rise and fall with the economy. We had record low numbers during the recession, so it's not surprising that deaths would increase as the economy slowly recovers," says Russ Rader, spokesman for the Insurance Institute for Highway Safety (IIHS).

In reality, you’re safer than ever

Motor vehicle deaths peaked at more than 51,000 in 1979 and 1980. At that time there were more than 3 deaths per 100 million miles traveled, according to the IIHS. For the first half of this year, there were 1.3 deaths per 100 million vehicle miles traveled. The enhanced safety features in today's vehicles have led to the sharp decline in deaths per vehicle miles traveled, Rader says.

Why your insurance rates are rising

The cumulative cost of the accidents so far this year has totaled $152 billion, up 24 percent from last year. That figure includes things such as medical expenses, wage and productivity losses, and property damage. Those soaring costs can affect all drivers, even if you've never been in an auto accident.

Both Allstate and Geico reported that they planned to boost rates because they have been handling more frequent auto insurance claims and more severe claims. Allstate reported an increase in property damage and bodily injury claims among both high-risk and preferred drivers, across state lines, and from customers old and new.

“We are broadly increasing rates to catch up, and then keep pace, with increased loss costs,” Allstate President Matt Winter said during a conference call with analysts on Aug. 4. Geico, announcing a 7.7 percent increase in rates for new Illinois customers, reported more frequent and more costly property damage, collision, bodily injury and personal injury protection claims.

The high costs of high-tech gadgetry

The cost of auto insurance claims has been on the rise for a number of years, driven by the increasing costs of medical care and the rising costs of repairing today's vehicles, which are equipped with so much more technology, says Robert Passmore, assistant vice president of personal lines policy at the Property Casualty Insurers Association of America.

On the other hand, the average vehicle on the road is 11.5 years old, and older cars are more likely to be considered a total loss if they're involved in a wreck, Passmore says.

New-car sales are expected to top 17 million this year, McChristian says. While new vehicles are much safer because of the extra equipment and technology, the technology can be a double-edged sword and be a distraction to drivers. And cell phone usage has a major role to play. The NSC says one-quarter of traffic accidents involve someone using a cell phone.

Long-term trend points to fewer crashes, not more

Even if the economy continues to strengthen, Passmore doesn't think that will necessarily continue to impact traffic fatality and injury rates. The number of vehicles on the road hasn't risen much in recent years, and millennials are less likely than their parents to even get their driver's licenses. Autonomous cars are being tested on public roads in several states. At the same time, public transportation usage is on the rise, and people are turning to ride-sharing services such as Uber and Lyft, Passmore says.

"I don't know that it (the increasing number of traffic fatalities) is going to be an ever-rising trend," he says. Reports from think tanks and industry trade groups suggest a dramatic drop in both accidents and insurance costs will become evident a generation from now.