Final answer:
The vacuum hose color used to reduce tripping hazards is yellow, which is universally associated with caution and safety.
Step-by-step explanation:
The color of vacuum hoses that is commonly used to help reduce tripping hazards is yellow. Yellow is often associated with caution and is used universally in safety equipment and signs to draw attention and alert people to potential hazards.
Using a yellow vacuum hose can make it more visible and thereby reduce the risk of someone tripping over it, enhancing workplace safety.