Recommendations for switching your mode of transportation once a day:

Intermodality:
Combine public transit with walking or biking to cover the "last mile," reducing your total dependence on the car.

Route optimization:
Plan your daily outings so you can run several errands in a single trip, minimizing the distance you travel.

Carpooling:
If using a car is unavoidable, coordinate with coworkers or neighbors to maximize vehicle occupancy and split the CO₂ footprint.

Preventive maintenance:
If you drive a motor vehicle, keep your tires properly inflated and your engine tuned to ensure maximum fuel efficiency.

Shift to micromobility:
Consider electric scooters or bicycles for trips under 5 kilometers, which are the most energy-inefficient trips by car.