Automotive

Sick of dangerous city traffic? Remove left turns

To reduce travel times, fuel consumption and carbon emissions, in 2004, UPS changed delivery routes to minimize the left-hand turns drivers made. Although this seems like a rather modest change, the results are anything but: ...

Engineering

Road building won't cut congestion or boost the economy

British politicians, national and local, tend to like investing in roads. The Treasury believes that the Department for Transport's approach to economic analysis is sound, and so is willing to award substantial funds. The ...

Computer Sciences

Optimizing traffic signals to reduce wait times at intersections

Traffic lights at intersections are managed by simple computers that assign the right of way to the nonconflicting direction. However, studies looking at travel times in urban areas have shown that delays caused by intersections ...

Software

Motorists' smartphones may help keep highways safe

Motorists with smartphones could help highway chiefs maintain road quality by sending "crowdsourced" data from their mobiles that would allow engineers to assess when carriageway repairs are needed, according to a new study.

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