Georgia. Department of Transportation. Office of Performance-Based Management and Research. "Implementation of a variable speed limit/ramp metering strategy to increase freeway capacity at metered on-ramps." University of Georgia. Map and Government Information Library. 2020-10, https://dlg.galileo.usg.edu/do:dlg_ggpd_s-ga-bt700-pr4-bm1-b2020-bv3-belec-p-btext.

Georgia. Department of Transportation. Office of Performance-Based Management and Research (2020-10). Implementation of a variable speed limit/ramp metering strategy to increase freeway capacity at metered on-ramps. Retrieved from https://dlg.galileo.usg.edu/do:dlg_ggpd_s-ga-bt700-pr4-bm1-b2020-bv3-belec-p-btext

Georgia. Department of Transportation. Office of Performance-Based Management and Research. "Implementation of a variable speed limit/ramp metering strategy to increase freeway capacity at metered on-ramps." 2020-10. November 1, 2026. https://dlg.galileo.usg.edu/do:dlg_ggpd_s-ga-bt700-pr4-bm1-b2020-bv3-belec-p-btext.