system operates four primary campuses in Knoxville, Chattanooga, Martin, and Pulaski; a Health Sciences Center in Memphis; and an aerospace research facility in Tullahoma. The Tennessee Board of Regents (TBR), also known as The College System of Tennessee, operates 13 community colleges and 27 campuses of the Tennessee Colleges of Applied Technology (TCAT). Until 2017, the TBR also operated six public universities in the state; it now only gives them administrative support. In 2014, the Tennessee General Assembly created the Tennessee Promise, which allows in-state high school graduates to enroll in two-year post-secondary education programs such as associate degrees and certificates at community colleges and trade schools in Tennessee tuition-free, funded by the state lottery, if they meet certain requirements. The Tennessee Promise was created as part of then-governor Bill Haslam's "Drive to 55" program, which set a goal of increasing the number of college-educated residents to at least 55% of the state's population. The program has also received national attention, with multiple states having since created similar programs modeled on the Tennessee Promise. Tennessee has 107 private institutions. Vanderbilt University in Nashville is consistently ranked as one of the nation's leading research institutions. Nashville is often called the "Athens of the South" due to its many colleges and universities. Tennessee is also home to six historically Black colleges and universities (HBCUs). Media Tennessee is home to more than 120 newspapers. The most-circulated paid newspapers in the state include The Tennessean in Nashville, The Commercial Appeal in Memphis, the Knoxville News Sentinel, the Chattanooga Times Free Press, and The Leaf-Chronicle in Clarksville, The Jackson Sun, and The Daily News Journal in Murfreesboro. All of these except the Times Free Press are owned by Gannett. Six television media markets—Nashville, Memphis, Knoxville, Chattanooga, Tri-Cities, and Jackson—are based in Tennessee. The Nashville market is the third-largest in the Upland South and the ninth-largest in the southeastern United States, according to Nielsen Media Research. Small sections of the Huntsville, Alabama and Paducah, Kentucky-Cape Girardeau, Missouri-Harrisburg, Illinois markets also extend into the state. Tennessee has 43 full-power and 41 low-power television stations and more than 450 Federal Communications Commission (FCC)-licensed radio stations. The Grand Ole Opry, based in Nashville, is the longest-running radio show in the country, having broadcast continuously since 1925. Transportation The Tennessee Department of Transportation (TDOT) is the primary agency that is tasked with regulating and maintaining Tennessee's transportation infrastructure. Tennessee is