Bollard pipes are made from steel and are used to block the vehicles to enter an area where they are not supposed to. So it acts as a protection to a specified area but sometime it happens that the crowd on the road increases due to which it has to be taken out. All the pipes that are installed have a lock in it which is operated through a key. Just put in the key and a cable will come out.
With the help of the key, the bollard pipe will raise and then move the key in the left direction. As soon as the key moves the pipe will come out and you can keep it aside. The traffic can be let out from that area and once it is done the pipe can later be installed again. Thus if you perform the steps in a series you will find no problem and work will also be accomplished.