High-Occupancy Vehicle (HOV) lanes are designated lanes on certain roads and provincial highways for vehicles carrying a specified number of occupants, along with other permitted vehicles. They are designed to move more people in fewer vehicles, support carpooling and transit use, and provide eligible travellers with potential time savings and more reliable trip times.
When are HOV lanes open?
HOV lanes are open 24 hours a day, seven days a week. Always pay attention to the posted signs and pavement markings when entering or travelling near an HOV lane.
Who can use an HOV lane?
On provincial highways, HOV lanes are reserved for:
- Vehicles carrying at least two people
- Buses
- Licensed taxis
- Vehicles with a green licence plate
- Airport limousines
- Motorcycles
- High-Occupancy Toll (HOT) permit holders, where permitted
- Emergency vehicles
Large trucks are not permitted to use HOV lanes, regardless of the number of occupants inside the vehicle.
Why HOV lanes matter for all drivers
HOV lanes can benefit more than just people who carpool. By helping move more people in fewer cars, they can:
- Improve the use of highway infrastructure
- Reduce the number of vehicles on the road
- Reduce overall emissions and improve air quality
Do not cross the striped buffer
HOV lanes are separated from general traffic lanes by a striped buffer zone. Crossing the striped buffer pavement markings is illegal and unsafe. If you need to leave or enter an HOV lane, do so only at the next designated entry or exit zone.
Vehicles with special exemptions
Buses may use an HOV lane at any time, regardless of the number of occupants. Emergency vehicles, including police, fire and ambulance vehicles, are also exempt from the usual occupancy restrictions.
Single-occupant taxis and airport limousines are permitted in HOV lanes. Vehicles displaying a green licence plate may also use an HOV lane with any number of occupants. Green plates are available for eligible plug-in hybrid electric vehicles and full-battery electric vehicles. For the most detailed and up-to-date information about green-plate eligibility, consult the Ministry of Transportation website.
Additional rules for commercial vehicles
Commercial motor vehicles must meet both of these requirements to use an HOV lane:
- There must be at least two people in the vehicle.
- The vehicle must be less than 6.5 metres in total length.
What happens if you use an HOV lane improperly?
If you use an HOV lane improperly, a police officer may stop you and issue a ticket. You will also be required to re-enter the general traffic lanes at the next entry or exit zone.
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Understanding lane rules is an important part of becoming a confident, responsible driver in Vaughan, Richmond Hill, Scarborough and Newmarket. At WDS Driving School, professional driving education can help first-time drivers build safer habits and prepare for Ontario road tests.
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One easy detail to miss is that you can’t cross the striped buffer just because the HOV lane is clear. Before changing lanes, look ahead for a designated entry or exit zone and plan your move early.