HOV lanes are special lanes on highways for carpoolers, buses, and motorcycles. A report from 1998 in the Puget Sound area looked at how well these lanes are working. They found that HOV lanes help people get where they're going faster and more reliably than regular lanes. The report also looked at how many people and vehicles use the lanes, how often rules are broken, and what people think about them. This information helps transportation planners decide if HOV lanes are working well and if more are needed.