Irish trade with the EU contributes an additional 34 tonnes of toxic nitrogen oxides to air in the UK each year.
As the recent wave of Black Lives Matter protests have shown many people, racial bias, prejudice and discrimination very much still exist, but have become increasingly subtle and complex.
Fish need to cross roads too. But the tunnels built to channel rivers under roads and railways can block their migrations.
New priorities in Boulder, Colo.
City streets were built to accommodate cars, but the COVID-19 pandemic has scrambled our transport needs. Many cities are moving to make streets more people-friendly and less car-centric.
New research reveals how roads channel microplastics from car tires and brake pads to remote ocean habitats.
Some species, like blackbirds can tolerate roads better than others.
Guy RD / shutterstock
My research into Britain's birds found 77% of species varied in abundance around roads.
Creating a digital twin of infrastructure or services makes them easier to monitor and operate safely.
The Mongu-Kalabo Road crosses the Barotse Floodplain in western Zambia.
Road and rail construction is booming in sub-Saharan Africa, but the pandemic has brought a welcome pause for reflection.
Road networks are emptying during lockdown. What does it mean for wildlife now and in the future?
Female tiger crossing track, Bandavgarh National Park, India.
David Tipling/Universal Images Group/Getty Images
A new study forecasts that thousands of miles of new road construction will cut through tiger habitat across Asia by 2050. Planning can make these projects more tiger-friendly.
How to get from A to B – in the future.
If a vehicle was coming through this intersection would this pedestrian have right of way?
Stephen Di Donato/Good Free Photos
Most people do not know the right-of-way rules, but a starting point should be that pedestrian needs and safety take priority. Current road rules are biased towards driver convenience
Peak-time drivers to the CBDs of Sydney and Melbourne typically earn much more than the average worker.
Commuters who drive to and from the CBD typically earn much more than most. Concerns about the fairness of charging drivers who use these busy roads at peak times are overblown.
Turning from the conflict of airport expansions to a vision of a low-carbon transport system.
The eight-mile ‘river of flowers’ that grows alongside a motorway near Rotherham, UK.
Britain's councils are cutting roadside verges less often to allow vibrant wildflower meadows to bloom.
Taxis have traditionally competed for kerbside space in our cities, but they now have many new competitors.
Cities must manage all the competing uses for limited roadside space to avoid congestion and maximise efficiency. And that begins with reliable data.
The real ethical challenge of driverless cars is not deciding how they respond in emergencies – it's facing up to the failings of human drivers.
Having fun yet?
Despite efforts to encourage a shift to sustainable transportation, traffic congestion is often the focus of debates over mobility. Motorists endlessly demand more roads, but is this really a solution?
The problem of unsafe drinking water afflicts poor communities most.
Just as America's highways, sewage systems and water pipes need fixing, so does the growing gap between rich and poor. Trump and the Democrats could use that money to address both.
Fixing cracks and potholes in concrete roads like this one may be easier with help from bacteria.
Patching concrete sidewalks, roads and bridges after every season of snow and ice is expensive. A team of engineers is now testing a new approach harnessing bacteria to patch the potholes and cracks.