The Nevada Department of Transportation and the Regional Transportation Commission of Southern Nevada recently began the next phase of testing for 42 active traffic management highway signs installed along north and southbound Interstate 15 as well as along U.S. Highway 95.

[Above graphic via the Nevada DOT]

Those full-color light emitting diode or LED powered signs were developed as part of the $1 billion Project Neon highway construction effort that wrapped up last summer; the largest and most expensive public works job ever undertaken during the state’s 155-year history.

Those LED highway signs are designed to provide real-time information to motorists regarding detours, crashes, speed limit changes, and lane restrictions – thereby improving safety and traffic flows by reducing differential travel speeds and the likelihood of secondary crashes for enhanced operational efficiency, the Nevada DOT said in a statement.