From the study: "A road diet involves narrowing or eliminating travel lanes on a roadway to make more room for pedestrians and bicyclists. (They) are often conversions of four-lane, undivided roads into three lanes—two through lanes plus a center turn lane."
The study was conducted in California, Washington and Iowa:
"The Iowa data indicate a 47 percent reduction in total crashes while the HSIS (California and Washington) data indicate a 19 percent decrease—a substantial difference."
It's clear from the results that road diets do reduce crashes - the only issue appears to be just how great a reduction.
In other news: On the July 13th Franklin Common Council Agenda -- you guessed it -- a road widening party.
You see, every little north-south or east-west suburban road has a six-lane arterial inside of it waiting to burst forth ...
Read the rest at: Road Diet Crash Reduction Variations Studied By DOT | Planetizen