This 'Vision Zero Plan' is part of the United Nations, 'Five Pillars Global Plan', which appears to be one of the ways they are attempting to heavily restrict, limit, and totally control transportation, and eventually end most private vehicle ownership.

NORTH BETHESDA, MD: "At the intersection of Nicholson Lane and Woodland Drive in North Bethesda, the speed limit is 30, but Montgomery County leaders are saying it might be too high. ‘20 is Plenty’ is a pilot program aiming to lower speed limits across the county. Speed is a major factor in serious injuries and fatalities on our roadways.mDrivers can spot these signs as a reminder to slow down in Germantown, North Bethesda and Long Branch. The Maryland General Assembly passed a bill that authorizes Montgomery County and its municipalities to decrease the maximum speed limit to no less than 15 miles per hour on highways, but only after performing an engineering and traffic investigation.

Montgomery County is one of the first counties, nationally, to roll out a Vision Zero Plan. The pilot program falls under the county adopted Vision Zero Action Plan to eliminate serious and fatal collisions on county roadways for vehicle occupants, pedestrians, and bicyclists by 2030."

https://www.localdvm.com/news/maryland/montgomery-county-lowers-speed-limits-on-busy-streets-as-part-of-pilot-program-20-is-plenty/

https://visionzero.ca/un-five-pillars/