A variable speed limit system changes the max speed limit throughout the day. Instead of a static limit, it's based on road ...

The Trump administration is hitting the brakes on an Obama-era plan that would have created a de facto national speed limit as low as 60 mph for big rigs and buses traveling American highways. The ...

Semi-trucks can be so slow on the highway, causing enough frustration amongst drivers to attempt passing them on the right. Being stuck behind or in between these gargantuan gas-guzzlers can delay you ...

The law allows the Texas Department of Transportation (TxDOT) to temporarily lower highway speed limits by up to 10 mph based on road conditions. These conditions include “inclement weather, ...