Telescopic light / Bumper post

Trying to move the bumper post at night becomes increasingly dangerous when we don't have any light. When car unloads their cargo,it will make movement and transfer easy. If we can directly compress the pillars, then it will easily accommodate the cars going through, and the trucks unloading their cargo. By adding solar power, it can be light in the night. It also can be use for a lawn light and chairs.