Two belts leave from every post and clip to the next, the upper one at hand height and the lower one within a cane's sweep. A guest who cannot see the lane still finds its edge, and the queue works for everyone who walks it. The pin socket keeps the floor free of bases. Posts drop in when the line goes up and lift out when it comes down, so a room can host a queue in the morning and an event at night. The post is a full Beltrac 3000, with 4-way dovetail grooves for signage and panels and a slow-retract mechanism your crew can swap in the field. Built in the USA, 5-year post warranty.