• 1 Post
  • 47 Comments
Joined 1 year ago
cake
Cake day: June 27th, 2023

help-circle






  • I’ve worked on SCADA systems. The most the keyboard was used for was logging in then then putting something heavy on it stop the computer going to sleep. System was entirely controlled by the mouse and head office didn’t consider that 1 person might be monitoring 4-6 computers on their own for an 8 hour shift and enforced a 5 minute idle lockout on all of them.











  • In the UK a blinking yellow means you can go if there’s no pedestrians but you’ll only ever get that at a pedestrian crossing on a straight road. Never an intersection. As in, a place where the only reason the light would ever change is a pedestrian pressed the button to request it. Usually then they’ll go red for a few seconds, then blinking yellow to allow extra time for slower people to cross.

    At intersections you might get green arrows to indicate you can go only in that direction. For example it might allow going straight but not turning because pedestrians are crossing the side road.

    There’s never a case where red means anything other than you must stop and I’ve never seen a case where both vehicles and pedestrians would get a green light for the same piece of road at the same time.