Like firefighters have locators,
Small device and rechargeable battery pack to track construction workers helmets or on body with clip on led and audio to point locate construction workers and various equipment on site.
Equipment like crane hooks, back hoe arms emit a warning for effective radius and a dire warning for immenent collisions (e g back hoe about to hit a worker)
Intervention systems and automation can cease the movement where collisions are immenent.
Tracking means no more lost equipment and awareness of all resources location on the site.