Sustainable transportation options, such as public transportation, cycling, and walking, help reduce traffic congestion by taking cars off the road.

Active transportation refers to using human power to travel, such as walking, cycling, or using a wheelchair.

Gasoline-powered vehicles are not considered sustainable transportation because they emit harmful pollutants into the air.

Carbon dioxide (CO2) is the primary greenhouse gas emitted by transportation activities, accounting for over 70% of total emissions.

Expanding highway capacity is not a sustainable transportation strategy because it encourages more driving and increases traffic congestion.

Decarbonization of transportation refers to the reduction of greenhouse gas emissions from transportation activities, typically by transitioning to zero-emission vehicles and fuels.

Walking or cycling does not involve fuel consumption, so it does not result in higher fuel costs.

Carpooling refers to sharing a ride with others in a vehicle, typically to a common destination, such as work or school.

Hybrid vehicles are not zero-emission vehicles because they still rely on gasoline or diesel fuel to power the engine.

Cycling refers to the practice of using a bicycle as a mode of transportation or recreation.

Parking lots are not considered sustainable transportation infrastructure because they encourage car ownership and use.

Public transportation refers to the use of buses, trains, trams, and other vehicles to transport people collectively.

Fuel subsidies are not considered sustainable transportation policies because they encourage the use of fossil fuels.

Driving refers to the practice of operating a motor vehicle, such as a car, truck, or motorcycle.

Public transportation helps reduce traffic congestion by taking cars off the road.