This is something that has been discussed before on this blog and the comments board and now the work is underway: Metro is relocating stand-alone validators at 7th/Metro Station in order to make it easier for customers to TAP when transferring between the Red/Purple Line subway and the Blue Line and Expo Line.
Work began earlier this week; the idea is to move the existing validators and add some news ones to form an array of validators that will serve a lot of customers at once. Customers will be able to walk by the validators and tap without having to go out of their way and queue up at inconveniently placed equipment.
Metro tested the validator placements in a variety of arrays and found that this particular array encouraged the best crowd flow and most frequent tapping by customers. The arrays were vetted by Fire-Live-Safety personnel as well as ADA staff.
Metro asks that everyone be courteous and careful while the work takes place.