Maybe we are going to get upset when we have queued up at the bank then any person takes our turn and time, but that situation will not be there when the bank or other offices use crowd control. Using crowd control will make the line in good condition without any problem among people who have queued.
One of the best crowd control tool is stanchions where will make the queue line straighter. It will also help people who confused about where to go when they are at the concert that many people there. Many types of stanchions, one of them is velvet rope type which fit to the short line, for example for bank or office use. Meanwhile, for outdoor or wide place use, it is good when we use barricades for long line queue or traffic control. Barricades is appropriate for the field or airfield use.