DRIVERS are stopping in their tracks to try and understand optical illusions on the road.
A series of brain teasers have started popping up on roads all around the world as safety officials hope to slow cars down.
One optical illusion, showing an elevated crosswalk was painted in Iceland, an auto-based publication named Popular Mechanics reported.
Car owners driving down the slowed to figure out the optical illusion.
The illusion was meant to try and frighten drivers into paying attention and hitting the brakes.
Selfish drivers mount pavement outside family homes putting pedestrians at risk
As cars approach, the paint makes it look like these road stripes are three-dimensional bars that would rip up the bottom of a vehicle.
But it's just tricky paintwork.
Those who do make it out eventually see that it's just painted on the ground are able to see that they can safely drive over it.
You have to have perfect vision to see the truth behind the very clever street painting, though.
Though they're not IQ tests, the tricky illusions are all over, testing drivers all over the world.
Lawmakers are using the images as a ploy to get drivers to slow down.
An optical illusion showing a girl chasing a pink ball in the street, appeared in Canada, according to The Boston Globe.
It was placed on a school street.
The illusion, named "Pavement Patty," was temporarily seen on the street in 2010 during the back-to-school season.
Pavement Patty was a three-dimensional decal and not a painting like the illusion in Iceland.
Top ten reasons learners fail their driving test revealed by the DVSA
"You're probably not expecting a child to run into traffic," a black sign near the optical illusion said.
