A new study of attitudes towards transport and mobility has identified five groups of travellers. The groups differ significantly in their choice of transport, distance travelled and the impact their transport choices have on the environment in terms of greenhouse gas (GHG) emissions.

The environmental benefits of cleaner, more efficient transport may be offset by increasing distances travelled by passengers and goods, according to a new report by the European Environmental Agency (EEA). The report suggests that technology needs to go hand-in-hand with a policy package that improves, avoids and shifts transport emissions.

Recent research suggests that increasing the number of private electric vehicles would have very little impact on electricity consumption in Milan, Italy. However, unless there are suitable regulations, the daily demand for power to recharge the vehicles at peak times could overload the capacity of the electric supply system.

Researchers have identified policies in Denmark, Germany and The Netherlands that have made cycling safe, convenient and mainstream in these countries. Coordinated transport, educational and land use measures have increased the popularity of this sustainable mode of transport over recent decades.

New research has compared life cycle environmental impacts of new petrol and diesel cars and highlighted options for improvement. It indicates that the greatest improvements are achievable through more efficient power trains and lightweight cars. However, these technological solutions come at a financial cost whereas other improvement options, such as behavioural changes, provide a win-win solution.

Fuel cells could have several efficiency-enhancing applications in civil aircraft according to new tests in the laboratory and on research aircraft. As well as providing auxiliary and emergency power, the by-products of fuel cells could have useful applications, for example, the water produced could be used for toilets and cooling.

New research has explored public expectations of public transport. Surveys of Spanish citizens revealed that existing bus users have different expectations of transport quality compared to non- or “potential” users. The results may help to inform future public transport policy and campaigns which encourage more people to use public transport.

New research on a major UK airport (Heathrow) has estimated that a night-time ban on flights could produce up to £860 million (1 billion euros) in financial savings over a 20 year period. Economic costs caused by the ban could be outweighed by savings from reduced health costs of sleep disturbance and stress caused by the noise of night flights.

Vehicle fuel economy has markedly improved, but there are other factors that influence fuel consumption and transport emissions, according to new research on the EU, USA and Japan. Changes in vehicle size and power also play a role indicating that, if fuel prices do not keep rising, policy focus may need to shift to managing vehicle use.

A recent study has assessed the lifecycle environmental impact during the production and use phase of three battery types for plug-in hybrid (PHEV) and full performance battery electric vehicles (BEV). The study indicates that newer lithium-ion (Li-ion) technologies outperform current nickel-metal hydride (NiMH) batteries and identifies processes contributing to 13 environmental impacts.

A recent assessment of fuels used in public transport in Kaunas, Lithuania, has found that buses powered with locally-produced biogas and trolleybuses powered with electricity generated from natural gas cause the least environmental damage for the city.

The energy output from offshore wind power has increased dramatically in recent years, and the costs of wind power are expected to fall, according to a recent analysis. The study reviews the global offshore wind sector, outlining the market’s current situation, costs and technology.

Many workplaces have developed mobility policies to reduce the number of staff commuting to work using single occupant vehicles (SOVs). A new study from Belgium reveals how companies can influence their employees' choice of transport to work and looks at the best ways to promote alternative means of commuting.

A new UK study suggests that there are associations between obesity, physical activity, and levels of CO2 emissions from transport. These associations seem mostly to reflect the fact that obese people tend to travel longer distances by motorised forms of travel. They may also partly reflect less ‘active travel’ by bicycle or walking by obese people.

A new study into the impact of railway noise has revealed that it is not just the level of noise that contributes to annoyance for local residents, but also the number of trains and the vibrations they cause. As railway transport is likely to increase in coming years, plans are needed to reduce these effects.

Speed constraints for aircraft are put in place, at some airports, to minimise noise pollution in local areas, however, such practices can be very fuel-inefficient. New research has now shown that relaxing departure speed limits could substantially reduce CO2 emissions, while maintaining acceptable noise levels.

A new report indicates that some progress has been made towards meeting key sustainable transport targets, but challenges remain. Improvements in passenger vehicle efficiency has led to reductions in emissions, however, reductions in oil consumption are not sufficient to meet targets, with more policy initiatives and continued monitoring needed to ensure that sustainability goals are achieved.

Researchers have found that ocean acidification leads to changes in the ways that clownfish normally respond to sound. As many species rely on hearing for orientation, habitat selection, avoiding predators and communication, ocean acidification could compromise auditory behaviour crucial for survival.

Levels of air pollution significantly increase on the island of Svalbard in the Norwegian Arctic when tourist cruise ships are present, according to a recent study. With shipping levels rising in the region, the researchers recommend that stricter emissions regulations are introduced in order to limit the impact of pollution on the Arctic environment.

Residents living near a busy railway line in Strasbourg were found by researchers to have reduced cognitive function compared to residents in quieter areas, which may be the result of long-term exposure to night-time noise. Psychological tests suggested that they had not adapted to the noise over the years, and they did not become less affected with time.

New research on climate-driven reductions in Arctic sea ice has predicted that, by 2040 to 2059, new shipping routes will become passable across the Arctic, linking the Atlantic and Pacific oceans. An increase in traffic has implications for the ecosystems of this fragile area.

A new method of assessing the sustainability of noise reduction devices (NRDs) used in transport infrastructure, such as noise barriers or absorptive claddings, is presented in a recent study. The new set of specially designed sustainability criteria allows NRDs to be easily and accurately evaluated, its developers suggest.

A ‘feebate’ can be an effective policy option to aid the transition to a more environmentally-friendly transport system, a UK study suggests. This combination of fees and rebates can increase the take-up of low-carbon cars, the researchers argue, which leads to reduced life cycle greenhouse gas (GHG) emissions.

Information on travel behaviour can provide insight into the most effective and sustainable ways to manage traffic congestion and its environmental impacts. A new German study focuses on service-related traffic and shows that employees of different types of companies have distinctly different travel behaviour.

A recent study has considered 21st century changes in shipping access through the Arctic Ocean along three potential new routes linking the Atlantic and Pacific Oceans. As the sea ice melts, it is possible that high-strength vessels will be able to sail directly through the North Pole by the end of the century, its results indicate.

Travelling by coach or train has a lower impact on the climate than travelling by air or car, but using a small diesel car to carry several passengers can have similarly low impacts per person, new research suggests. Air travel is the worst form of transport, in terms of global warming impact, the researchers found, but the average percentage occupancy of a mode of transport significantly affects the impact per passenger.

The promotion of diesel-fuelled cars in Europe may not have had the beneficial environmental effects that were expected, research suggests. It has been assumed that they help reduce greenhouse gas (GHG) emissions from the transport sector, but studies show that their fuel efficiency is lower than previously believed, while their black carbon and nitrogen oxides emissions are higher. The consequent reduction in global warming effects from diesel cars may therefore be negligible, perhaps even negative.

Different European regions have very different diets and environmental conditions, meaning their water consumption varies widely. Despite this, switching to vegetarian diets in keeping with regional variation would substantially reduce water consumption in all areas, a new study concludes. Where people choose to eat meat, adopting a healthy diet low in oils and sugar will also reduce water consumption, although to a lesser degree.

Better fuel economy, lower emissions and longer driving ranges are important factors for people considering the purchase of alternatively-powered vehicles (APVs), new research suggests. The German study also found that people would consider paying more for an APV if they could enjoy vehicle tax exemptions, free parking or bus lane access.

Car use could be reduced through careful urban planning, according to the results of a new German study. By combining data on driving behaviour and high-resolution satellite imagery, the researchers show how patterns of land and car use are connected.

Two shared electric car schemes, in Berlin and Paris, have been examined by a recent study. Although both schemes are progressive, Berlin's takes an 'inter-modal' approach to encouraging sustainable mobility, because it integrates electric cars into the wider public transport system. The scheme in Paris, however, focuses on cars as the main form of transport.

The transition to a low-carbon transport system needs a coherent national policy framework that supports all its aspects, according to a review of transport and innovation policy in Finland. Its findings suggest that policy makers need to identify and remove contradictory policies that present barriers to achieving a greener transport system.

Transport policies that produce physically segregated cycle lanes on main roads, combined with low-speed local streets, will boost numbers of cyclists and provide the best financial return on investment, new research suggests. Using Auckland, New Zealand as a case study the researchers showed that the economic benefits of this policy can outweigh the costs by more than 20 times.

Motivation to practise fuel-efficient driving may be more influenced by environmental concerns than by financial benefits, research suggests. In promoting fuel efficiency, this survey of Dutch motorists highlights the power of providing feedback to drivers – both environmental and economic – on their behaviour.

Bike share programmes appear to have successfully reduced private car use in Brisbane, Melbourne, Washington DC, Minnesota and London, suggests recent research. In London, however, high demand for vans to transport bicycles between docking stations may have increased overall motor vehicle use in the city.

What drives people to behave in more environmentally friendly ways? A new study explores factors that affect Dutch motorists’ intentions to switch to electric vehicles. The authors found that they could reliably predict the intention to switch by applying a theoretical framework—Protection Motivation Theory—based on perceptions of the threat of environmental damage.

Public subsidies are important in encouraging organisations to trial and expand electric vehicle fleets, according to new research. The study, based on interviews and reports from 17 organisations, found that the opportunity to test new technology was the most important factor in deciding to trial electric vehicles. However, some smaller independent companies chose not to expand their fleet because of the expense.

TEvery kilometre travelled by car incurs costs to the individual and society that are more than six times those of travelling by bicycle, a new study suggests. The researchers presented a cost-benefit analysis developed for Copenhagen, finding that cars resulted in costs of 0.50 €/km in comparison to 0.08 €/km for bikes.

Carbon emissions from Dutch road networks could be reduced by almost a third if more innovative materials and processes were used, a new study suggests. Researchers assessed the potential benefits associated with 10 innovations in road construction and maintenance, and compared them to conventional materials and processes.

Long-distance travelling accounts for a significant number of miles travelled per person, but estimates of its greenhouse gas emissions are lacking. Using data from Belgium and the Netherlands, this study estimates that long-distance journeys account for 40–50% of total mileage and 50% of greenhouse gas emissions of all people transport in Western Europe.

Climate change will have major consequences for transport networks, especially those located on coastlines. This study assessed the impact of projected sea-level rise on a vulnerable stretch of railway line on the coast of South West England. The authors say their semi-empirical modelling method could provide guidance to policymakers worldwide.

People who live in the most ‘activity-friendly’ neighbourhoods do up to 1.5 hours more physical activity a week than those in the least supportive neighbourhoods. This is according to a new international study which measured levels of exercise — mainly walking for recreation or transport — in relation to the urban environment across 14 diverse cities. The results show how urban design — such as parks and local amenities — can promote healthy lifestyles which also bring environmental benefits, such as better air quality, through reduced car use.

Airports are associated with air and noise pollution and may, therefore, reduce the quality of life of local people. This study assessed the link between aircraft noise and subjective wellbeing, using data from 17 English airports. The authors conclude that living under flight paths has a negative effect on people’s overall wellbeing, equivalent to around half of the effect of being a smoker for some indicators.

The measures available to reduce the noise and vibration produced by trains have been outlined in a recent study. The researchers say the most appropriate mitigation should be determined on a case-by-case basis and life-cycle assessments can help analyse the economic costs and carbon footprint of different methods.

How are Denmark, Finland, Iceland, Norway and Sweden moving towards renewable and lower-carbon energy use? A recent study suggests the key areas for progress, to ensure Nordic countries meet low carbon goals, include more renewable and decentralised electricity supply, the development of low-carbon transport systems, improved energy efficiency in building design and industrial use of carbon capture and storage.

The move towards smart mobility systems in cities across Italy, specifically in relation to public transport systems (including cycle infrastructure, and cycle and car-sharing schemes) has been assessed in a new study. The researchers say significant progress has been made in light of new guidelines imposed by the European Union, which is often linked to financial investment, as well as the capacity of city planners to implement changes.

Hybrid and electric vehicles emit lower levels of carbon dioxide and air pollutants than conventional petrol and diesel vehicles, yet their market uptake in the EU remains limited. New research provides an assessment of the Total Cost of Ownership (TCO) — which combines purchase and operating expenses — of different vehicle types. By comparing historical data on hybrid, petrol and diesel vehicles in three countries (Japan, the UK and the USA), researchers found a strong link between TCO and market share of those vehicles. They also identified a number of ways in which policymakers may promote the adoption of cleaner vehicles through the provision of financial incentives.

Electric vehicles (EVs) could play a role in future power supply, but face issues surrounding the longevity of their batteries. This study reconciles two recent contradictory results on the effects of vehicle-to-grid (V2G) technology on battery life-time, and shows that V2G — a process via which EVs would exchange energy with the power grid to provide ancillary services, such as supplying power during peak periods, and helping to regulate grid frequency — could actually extend the lifespan of commercial lithium-ion batteries.

In the automobile industry, the development and manufacture of increasingly complex technological components — catalytic converters, LEDs, electric motors, batteries — requires increasingly complex and diverse raw materials with specific qualities. The technological and economic importance of these materials, combined with their vulnerability to supply shortages and likelihood of supply interruptions, indicates their ‘criticality’. This study uses a new methodology to explore the criticality of 27 key metals used in the automotive industry and other sectors, and highlights six that are especially vulnerable: rhodium, dysprosium, neodymium, terbium, europium and praseodymium. The researchers found there was limited recycling and substitution of these metals and a high possibility of restrictions to their supply.