The table and chart show how people in Houston, Texas commute. The table shows the percentage of people using different modes of transportation, along with their average frequency. Meanwhile, the bar chart shows the CO₂ emissions per kilometer for each type of transportation.
The most commonly used mode of transport is a single-occupancy car, while walking and cycling are the least common. The highest CO₂ emissions come from cars, while walking and public transport produce significantly less emissions.
Specifically, single-occupancy cars are used by 48% of commuters, with an average age of 43. Buses and trains are used by 37% of people, mostly older people, around 47 years old. Only 4% walk or cycle, and this is the group with the youngest average age – around 31 years.
As the chart shows, single-occupancy cars emit the most CO₂ – around 0.33 kg per kilometre. Multi-occupancy cars emit less – around 0.09 kg. Cars and trains emit around 0.015 kg. Walking and cycling, on the other hand, produce almost no CO₂ emissions.