abbreviation for high-occupancy toll lane: a fast-moving lane (= a section) on a wide road that is only to be used by cars with two or more people in them, by buses, or by vehicles with only a driver if the driver pays a toll (= a charge)

The HOT lanes are designed primarily for express buses and other high-occupancy vehicles.

Over the course of the month, 6,500 different vehicles used the HOT lanes. 在这一个月里，有6500辆不同的车辆使用了高承载收费车道。