The vast network of Interstate highways developed in the second half of the 20th century fueled economic growth and created ...

the interstate highway system changed life as we know it. Now these systems are about to turn 70 years old. How did we get here and what can be improved? Up until the mid-20th century, most roads ...

“People were using the system more as an interstate rather than a suburban ... lower the speed limit to 50 and 45 miles per hour. A map shows where those changes have been made.