1) This may be more like a municipal utility which has a right to enter your property for reading meters or repairing their lines/equipment once they’ve determined the need, and given notice. That is not a 4th Amendment “search” which requires a “reasonable expectation of privacy” (REP). Normally the meters/equipment are in an area that does not have a REP.
2) This is limited to premises adjacent to the Washington Metropolitan Area Transit Authority system
3) If necessary, courts will have to confine this law to within constitutional limits of probable cause and precedent that requires a warrant for house searches except for exigent circumstances or consent.
Hope that’s all it is. But slippery slope. Utilities this week, next week who knows.