As Michigan State Police crack down on speeders, a new study also is revealing why motorists should slow down.

Michigan Auto Law released a report recently on Michigan's most dangerous highways for 2018. The top 10 most dangerous highways have speed limits of 70 mph, with half of them in Oakland County.

Other highlights of the report:

More than 40% of all fatal car crashes in the state happened on a highway.

January and February had by far the highest number of injury crashes compared to the remainder of the year.

Fridays and Mondays had the highest volume of injury crashes in a given week.

The highest amount of injury crashes happened between 3 p.m. to 7 p.m. on any given day.

The majority of car crashes and injuries occurred in densely populated areas, or around ramps to other highways and roads.

Distracted driving, high speeds, merging traffic and semi-trucks were common factors in the accidents.

Car crash and injury data were provided by the Michigan State Police Traffic Crash Reporting Unit. Their report is a compilation of official crash data from vehicle accident reports filed by law enforcement across the state.

Here are metro Detroit's most dangerous roads, according to the study:

Wayne County

Northbound I-75 between the Warren Avenue exit and I-94 exit, Detroit

Total crashes: 42

Injury crashes: 17

The stretch of road between these two exits has heavy traffic volume with drivers merging and changing lanes right before the heavily traveled I-94/I-75 interchange. This segment also had the highest number of injury crashes as well for the city of Detroit.

Northbound I-75 between the 7 Mile exit ramp and the 7 Mile overpass, Detroit

Total crashes: 35

Injury crashes: 7

Despite being less than a half-mile long, this other busy stretch of I-75 just south of 7 Mile Road saw several crashes in 2018.

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Oakland County

Eastbound I-696 between Bermuda Mohawk and Campbell Hilton, Royal Oak

Total crashes: 84

Injury crashes: 39

This stretch of road between Woodward Avenue and the I-75 interchange is not quite a half-mile in length, but the daily traffic volumes are extremely heavy. Plus, it didn’t help that road construction in 2018 likely affected the car accident and injury numbers. Not only did this stretch of highway have far more crashes than even the No. 2 (84 versus 68), it also had almost double the number of injury crashes than any other highway segment in the state.

Southbound I-75 between 14 Mile Road exit ramp and 14 Mile Road overpass, Troy

Total crashes: 68

Injury crashes: 19

This stretch of southbound I-75 as it goes over 14 Mile Road to the area where cars enter the highway from eastbound 12 Mile Road had 68 crashes last year. Westbound 12 Mile Road traffic entering the freeway and merging over within this short distance is likely the cause of many of these reported car accidents.

Southbound I-75 between 11 Mile Road exit ramp and 11 Mile Road overpass, Royal Oak

Total crashes: 47

Injury crashes: 22

Another interchange along I-75 had the second-highest number of crashes involving injury in the state. With major construction under way last year, 11 Mile Road was likely used heavily as an alternate route with last-minute lane changes to exit the interstate contributing to the dangerous and congested road conditions.

Kent County

Northbound US-131 exit ramp between I-96 West exit and Alpine Avenue, Walker

Total crashes: 39

Injury crashes: 8

This road segment is actually an exit ramp off of U.S.-131 that takes drivers to busy Alpine Avenue. With 39 total crashes, it had the highest amount in 2018 for Kent County.

Southbound US-131 between Wealthy Street exit ramp and Wealthy Street overpass

Total crashes: 38

Injury crashes: 17

At just under two-tenths of a mile, this stretch of U.S.-131 had the highest number of highway injury crashes in Kent County last year.

Washtenaw County

Northbound US-23/Westbound M-14 between the railroad overpass and M-14/US-23 exit ramps, Ann Arbor Township

Total crashes: 26

Injury crashes: 4

As M-14 drivers are forced to exit onto one of two busy Michigan highways, many are trying to merge into the correct lane through this road segment. This likely causes many of the 26 crashes.

Southbound U.S.-23/Eastbound M-14 between Nixon Road and Eastbound M-14/Southbound U.S.-23 exit ramps, Ann Arbor Township

Total crashes: 26

Injury crashes: 2

Tied with U.S.-23/Eastbound M-14, this segment is within the same vicinity along the area where three major Michigan highways converge. As drivers once again have to merge lanes to continue onto either US-23 or M-14, crashes are likely to occur.

Ingham County

Eastbound I-96 between Meech Road and Dietz Road, Leroy Township

Total crashes: 22

Injury crashes: 5

In between the cities of Williamston and Webberville, this eastbound stretch of I-96 saw the most highway car crashes in Ingham County in 2018. As many commuters who travel I-96 frequently know, this area seems to slow down at times to a crawl but eventually clears up before Fowlerville.

Southbound U.S.-127 between Michigan Avenue and Kalamazoo Street, Lansing Township

Total crashes: 17

Crashes involving injury: 10

Located east of downtown Lansing, U.S.-127 is another road segment on a busy freeway where once again drivers are merging to exit onto I-496 west, or they are staying on U.S.-127 to continue south. With commuters going home from both the busy downtown area as well as the Michigan State University campus, traffic is slow through this area during the evening hours. This road segment also had the highest number of crashes involving injury of any stretch of highway in Ingham County.