[zeristor]

Less insecticide is probably the key thing.

Driving in the eighties with windscreens full of insects, and now hardly anything, and a lot less of the things that lived on them.

[themaninthedark]

Sometimes I wonder about that. The measure is number of insect impacts on windshields but is the car the same?

If we use a more modern care would the increased aerodynamics prevent impacts as instead of punching through the air you are cutting through it?

Have never read the full experimental setup and assumptions... I do know that I have less dead bug then when I was a kid...

[ai_]

Ever since I started riding a motorcycle I've started to believe this to be the case too. I get so many bug splats on my helmet, jacket, and motorcycle that I'd never have if I was driving a car. By the end of most rides out in the country on the highway I'm covered in splats.

[diegolas]

i've noted less bugs on the windshield but about the same on the optics and the radiator screen, so i go with the aerodynamics explanation as well. bugs are there because i see the bug swarms around the road too.