Its very important to take into consideration about spacing of the bollards. Take a look at the the width of the area your thinking to secure. As an example if your driveway is 4 metres wide and you choose 1 telescopic bollards, then your car will still be able to pass through (depending on make and model). Therefore this would eliminate the whole purpose of the bollard. Any openings greater than 3.2 metres we would recommend 2 telescopic posts.. Discounts are offered on 2 or more posts being installed. If you are unsure about the number of bollards required then do not hesitate to get in touch. We will talk you through every option available.