The lowest number of people died in 2017 on Pennsylvania roads since PennDOT began keeping records, and 173 fewer than 2012.

Leslie Richards, PennDOT secretary, announced the data during a news conference Monday morning on the 2018 construction season in District 8.

Last year saw the lowest number of traffic fatalities since PennDOT began keeping records in 1928, Richards said.

There were 1,137 people killed in 2017, which is 51 fewer than in 2016, a year that previously ranked lowest in number of deaths.

"It is still way too high...We will not rest until we do everything we can to reduce the number of fatalities and serious injuries on our roadways," Richards said.

Here are some other facts about 2017 traffic deaths:

Fatalities in red-light running crashes increased to 35 from 28 in 2016.

Fatalities in work zone crashes increased from 16 to 19.

30 fewer people were killed while unbuckled - 378, compared to 408 in 2016.

22 fewer pedestrians were killed - 150, compared to 172 in 2016.

95 fewer deaths involved drivers impaired by drugs or alcohol - 246, compared to 341 in 2016.

There were 172 fewer deaths than in 2012.

230 fewer people died in impaired driver crashes than in 2012.

94 percent of crashes are still due to human error.

There were 153 fatalities in crashes involving drivers aged 75 years or older, up from 132 in 2016.

Compared to 2013, there were 71 fewer total traffic deaths, 203 fewer deaths in crashes involving impaired drivers, and 47 fewer unrestrained deaths.

Factors in the decline in traffic deaths are the efforts of PennDOT design and maintenance forces working with state police and the health and education departments to keep roads safer, Richards said.

For more information visit the PennDOT crash data web site.