The difference between the transport footprint of London and that of St Albans is striking. The average resident’s transport footprint in St Albans is 55% bigger than the London average. Public transport, low levels of car ownership and policies to discourage large, polluting cars are behind London’s lower transport footprint. Within London most commuting is by public transport. High levels of commuting from St Albans (particularly by car rather than public transport) into London are partially to blame for St Albans’ high transport footprint. Some.