A new motorcycle lighting design could help drivers see motorcyclists sooner. That could save lives, researchers say.

The rise of e-commerce means billions of packages are delivered in the US each year. That creates traffic and pollution, but urban freight researchers are finding better way to get goods to customers.

A technique that allows autonomous cars to make relevant calculations more quickly showed it improves both traffic and safety in simulated situations.

Noise pollution is a serious problem, and cars make a lot of it. But roads are also a factor.

Traffic stats show that roadway deaths spiked during the pandemic. Can it be that we were not only distracted and frustrated, but also out of practice?

Traffic crashes kill and injure millions worldwide every year and are a major drain on economic development. Improving road safety would produce huge payoffs, especially in lower-income countries.

A new model shows that traffic forecasting doesn't have to be perfect to be efficient. A "good enough" solution works just fine.

Drive-throughs not only increase air pollution and emissions, but also contribute to a car-centred culture that we need to avoid.

Studies show that when people can ride in a car without having to operate it, they increase their car use. That could increase traffic and pollution, unless government puts a price on car travel.

London was rated 2021’s most congested city.