Obviously, the bicycle is a climate-friendly transport alternative.
So, if you can choose the bike, then you'll be choosing the greenest mode of transport.
the most climate-friendly way to get from east Denmark to west Denmark is by express train or by bus via the Great Belt Bridge? The most climate-unfriendly way is by airplane, or driving by car alone and taking the high-speed car ferry. (Source: Henrik Gudmundsson, senior consultant at Concito).
CO2 emissions in grams per person per kilometre:
Train = 40 grams
Electric car = 60 grams
Bus = 80 grams
Petrol and diesel vehicles = 120 grams
Domestic flights = 180 grams
International flights = 220 grams
High-speed car ferry = 1,700 grams