1. Global traffic scorecard;INRIX Res.,2020
2. FHWA. Reducing Non-Recurrent Congestion. https://ops.fhwa.dot.gov/program_areas/reduce-non-cong.htm. Accessed Jun. 23, 2020.
3. Drivers’ diversion from expressway under real traffic condition information shown on variable message signs;Li;KSCE J. Civ. Eng.,2014
4. Alternate Route Handbook,2006
5. Federal Highway Administration, Manual on Uniform Traffic Control Devices, 2009 Edition (Washington, DC: U.S. Department of Transportation, 2009).