Practical ways to monitor travel-related emissions
Tracking travel emissions helps you understand where most of your transport-related carbon comes from and where reductions are possible. The most common sources are commuting, vehicle use, and air travel.
What to log:
- Car travel: record distances driven or fuel bought; note vehicle fuel efficiency or type.
- Public transit: log regular trips and estimate weekly or monthly patterns.
- Flights: record flight routes or distances for each trip.
Methods to track:
- Use a simple spreadsheet to log trip dates, modes, distances, and estimated CO2e using standard emission factors.
- Use apps or trip trackers that automatically record routes and estimate emissions.
- Keep annual totals and break down by mode to spot trends.
Estimating emissions:
- Multiply miles/kilometres by mode-specific emission factors (e.g., car per km, domestic flight per km, train per km).
- Adjust for occupancy: carpooling reduces per-person emissions; full trains spread emissions across more passengers.
Using the data:
- Identify high-impact changes: reduce frequent short flights, swap car trips for transit, or shift to cycling for short commutes.
- Set realistic reduction goals (e.g., reduce car km by 20% or cut flight km by combining trips).
Regular tracking raises awareness and shows the effect of behavior changes, helping you prioritize effective travel choices.