Solar roadways have been promoted as a way to fight climate change, put people to work and make driving safer. But on closer inspection the reality is less than impressive.
Bumps in the road are dangerous, expensive and difficult to fix.
We need to consider why transport infrastructure is so controversial, and how politicians can ensure they have the public's trust when making announcements for all transport projects.
Australian bridges are generally safe, but we don't have transparent information about how often they're inspected or maintained.
Bridge engineering does not end when construction finishes and traffic starts to flow.
'The Mother Road' is one step closer to becoming a National Historic Trail, which would allocate funds for struggling towns along the original Route 66.
Everyone doesn't simply wait their turn at traffic lights. Signals are set up to enable a 'green wave' for cars and adjust to heavy traffic, making walkers wait longer no matter how many there are.
'Bendable concrete' is not an oxymoron. Mimicking designs found in nature, engineers are making concrete that gives under stress without shattering – an advance that could improve US infrastructure.
Australia does need infrastructure to spur growth and support jobs - that idea comes with a big "but".
Analysis of the business cases for three of the biggest projects deemed "high priority" by Infrastructure Australia raises questions about the process.
By expanding our understanding of streets and enhancing their design, every street corner could become a space to socialise, to exercise, to play, or to trade.
One potential benefit of WestConnex, which remains untouched, is that it could relieve Sydney's city centre from cars and make it more pedestrian-friendly.
A rethink in the approach to road freight transport safety is urgently required to reduce fatalities and injuries.
Adding a bit of fungus to the initial ingredient list might be one way to endow concrete with the ability to fill in any bits of damage that occur, without the need for human intervention.
If the strategies we put in place to make cycling safer were taken up in earnest the result would often be chaos.
With frigid temperatures and snow in the forecast, slippery roads can't be far behind. Salt keeps roads safe, but it's harmful to aquatic environments.
Chinese investment is driving an unprecedented investment boom in global infrastructure. But despite its claims to be pursuing green development, China's building bonanza is harming the planet.
A city-wide experiment suggests well-designed road use charges could ease congestion by encouraging people to drive at different times, take other routes or use other transport.
Conventional approaches to assessing the impact of cameras on collisions may be overoptimistic.
Instead of focusing on freeways, governments should change the way we pay for urban roads and public transport.