A construction site is a noisy place to work, which makes nonverbal communication absolutely crucial for the job. The accepted method for the industry is hand signals. The Occupational Safety and Health Administration, or OSHA, actually requires a signal person be on every single site. Luckily, has made a guide, which is not only informative but also just stupid amounts of fun to look at.
Every single one of these motions looks they could be in the "" video.