The chart shows CO2 emissions per passenger kilometre for various methods of transport in the European Union while the pie chart shows European Union spending on transport. Flying by air produces by far the greatest CO2 emissions, approximately three times as much as passenger cars which are the next largest producers!
Very little is spent by the EU on air travel while roads make up more than half of the EU transport budget.
Trains produce about three times less CO2 emissions per passenger kilometre than passenger cars and eight times less than air travel. Nearly a third of EU transport funds are spent on railways.
Ships are a clean form of transport and produce about the same amount of CO2 per passenger kilometre as trains do. However, only 2 percent of EU funds are spent on ports. A further one percent is spent on inland waterways.
Coaches are the cleanest form of transport. Emissions of CO2 per passenger kilometre from coaches are half those of buses. Buses emit less than half as much CO2 per passenger kilometre as cars. The European union spends 10 percent of its transport budget on public transport, such as buses and coaches. 
The chart  
shows
 CO2  
emissions
 per  
passenger
  kilometre
 for various methods of  
transport
 in the European Union while the pie chart  
shows
 European Union spending on  
transport
. Flying by air produces by far the greatest CO2  
emissions
, approximately three times as much as  
passenger
 cars which are the  
next
 largest producers! 
Very
  little
 is  
spent
 by the EU on air travel while roads  
make
 up more than half of the EU  
transport
 budget.
Trains produce about three times less CO2  
emissions
 per  
passenger
  kilometre
 than  
passenger
 cars and eight times less than air travel.  
Nearly
 a third of EU  
transport
 funds are  
spent
 on railways.
Ships are a clean form of  
transport
 and produce about the same amount of CO2 per  
passenger
  kilometre
 as trains do.  
However
,  
only
 2 percent of EU funds are  
spent
 on ports. A  
further
 one percent is  
spent
 on inland waterways.
Coaches are the cleanest form of  
transport
.  
Emissions
 of CO2 per  
passenger
  kilometre
 from coaches are half those of buses. Buses emit less than half as much CO2 per  
passenger
  kilometre
 as cars. The  
European union
 spends 10 percent of its  
transport
 budget on public  
transport
, such as buses and coaches.