On an expressway, an HOT lane is a High Occupancy Vehicle (HOV) lane which single drivers are also allowed to use by paying a toll. Tolls can vary depending on time of day and demand, in order to regulate the flow of traffic. HOT lanes allow for a better utilization of HOV lanes while generating revenue. HOT lanes can also be opened to buses.

Limited-access managed lanes that allow eligible carpoolers, transit, motorcycles and Alternative Fuel Vehicles to use lane for free, while allowing previously ineligible solo drivers to buy back into the lane for a fee. The number of cars using these lanes can be controlled through value pricing via electronic toll collection so as to maintain fre [..]