For those worried about the anti-vax trucker convoys "threatening" Washington...
Think back to 2013.
Trucker protest circles Beltway, but causes no major delays, authorities say
Police authorities in Maryland and Virginia reported no major incidents Friday as a result of the much-talked about truckers protest around the Beltway. Drivers of tractor trailers had said they were going to drive slowly to block off parts of the Beltway to protest excessive government intrusion.
There were police reports of about 30 tractor trailers with American flags and signs for their protest Truckers Ride for the Constitution driving at the same speed as the rest of traffic on the Beltway in Friday mornings rush hour. But by mid-day the truckers appeared to have broken into smaller groups amid already-heavy volumes of traffic and rain showers on a holiday weekend.
In Maryland, state police officials said Friday there were a few minor accidents in the morning on the outer loop of the Beltway in College Park at the Route 1 exit and at the Route 50 exit in Landover none of them were related to the trucker protest.
https://www.washingtonpost.com/local/trafficandcommuting/va-state-police-trucker-protest-launched-on-i-95-north-vehicles-head-toward-beltway/2013/10/11/c8049b7e-3266-11e3-89ae-16e186e117d8_story.html