This paper presents a simple way to figure out if high-occupancy vehicle (HOV) lanes are worth the cost. By looking at how much time people save using HOV lanes, we can see if they are cost-effective. The study shows that this method can help decide if an HOV lane is worth keeping or if a new one should be built. It's a quick and useful way to check if HOV lanes make sense without needing a lot of money or data.