Installation of the roughly 4-foot posts, called bollards, began early Monday on the Strip near the Hawaiian Marketplace south of Planet Hollywood. They are meant to protect pedestrians walking on the Strip from vehicle-ramming attacks and traffic accidents, Clark County spokesman Dan Kulin said. “It’s good to see those go up because there’s so much sidewalk here that isn’t protected,” said Maritza Cabrera. “It’s not just keeping cars off the sidewalk, it’s keeping people out of the street.”