NewsPronto

 
Men's Weekly

.

USA Conversation

The Conversation USA

The Conversation USA

Sick of dangerous city traffic? Remove left turns

  • Written by Vikash V. Gayah, Associate Professor of Civil Engineering, Penn State
imageLeft turns are dangerous and cause a lot of unnecessary traffic. Chris Jongkind/Moment via Getty Images

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: UPS claims that per...

Read more: Sick of dangerous city traffic? Remove left turns

More Articles ...

  1. Urban oil wells linked to asthma and other health problems in Los Angeles
  2. School nurses have a big job – is 1 for every 750 kids really enough?
  3. What are the ethics of giving back money that doesn't belong to you?
  4. Shot 55 years ago while marching against racism, James Meredith reminds us that powerful movements can include those with very different ideas
  5. Pandemic misery index reveals far-reaching impact of COVID-19 on American lives, especially on Blacks and Latinos
  6. Pandemic misery index reveals far-reaching impact of COVID-19 on American lives, especially on Blacks and Latinos
  7. Weight stigma is a burden around the world – and has negative consequences everywhere
  8. 5 mandatarios reprobados en manejo de la pandemia
  9. The next pandemic is already happening – targeted disease surveillance can help prevent it
  10. Overcrowded US national parks need a reservation system
  11. Congress can't do much about fixing local police – but it can tie strings to federal grants
  12. How a national student database could cheapen the college experience
  13. Trans kids in the US were seeking treatment decades before today's political battles over access to health care
  14. How women in the Southern Baptist Convention have fought for decades to be ordained
  15. How to 'build back better' health habits after the pandemic year
  16. Ending food insecurity in Native communities means restoring land rights, handing back control
  17. Ex-prisoners are going hungry amid barriers, bans to benefits on the outside
  18. Going beyond 'back to normal' – 5 research-based tips for emerging from pandemic life
  19. Japanese American soldiers in World War II fought the Axis abroad and racial prejudice at home
  20. Why do women still get judged so harshly for having casual sex?
  21. Veterans took an especially bad hit during the pandemic
  22. 'WandaVision' echoes myths of Isis, Orpheus and Kisa Gotami to explain how grief and love persevere
  23. Local newspapers can help reduce polarization with opinion pages that focus on local issues
  24. Colombian city beset by crime declares 'Black Lives Matter'
  25. Teachers in South Central LA who had personal ties to the neighborhood made better connections with students
  26. Some coastal areas are more prone to devastating hurricanes – a meteorologist explains why
  27. Biden’s budget includes a jump in climate spending – here's why investing in innovation is crucial
  28. Engine No. 1's big win over Exxon shows activist hedge funds joining fight against climate change
  29. To protect ocean environments, 'good enough' might be the best long-term option
  30. Anger in Tokyo over the Summer Olympics is just the latest example of how unpopular hosting the games has become
  31. 10 hip-hop songs to take you on a voyage into space
  32. Politicized science drove lunar exploration and Stalinist pseudoscience – but polarized scientific views are worse than ever
  33. Colonial Pipeline forked over $4.4M to end cyberattack – but is paying a ransom ever the ethical thing to do?
  34. Think like a virus to understand why the pandemic isn't over yet – and what the US needs to do to help other countries
  35. Why more public libraries are doubling as food distribution hubs
  36. Fast computers, 5G networks and radar that passes through walls are bringing 'X-ray vision' closer to reality
  37. Can people vaccinated against COVID-19 still spread the coronavirus?
  38. Marriage trends, political views undermining the notion of a unified American Jewish identity
  39. Giving food pantry clients choices – and gently nudging them toward nutritious foods – can lead to healthier diets
  40. 1 in 4 unvaccinated people may not comply with CDC guidelines to wear masks indoors, survey suggests
  41. Narcissistic people aren't just full of themselves – new research finds they're more likely to be aggressive and violent
  42. Oil companies are going all-in on petrochemicals – and green chemistry needs help to compete
  43. Body cameras help monitor police but can invade people's privacy
  44. 100 years after the Tulsa Race Massacre, lessons from my grandfather
  45. How the early internet created a place for trans youth to find one another and explore coming out
  46. How the bulletin board systems, email lists and Geocities pages of the early internet created a place for trans youth to find one another and explore coming out
  47. Why widespread health woes could follow from pandemic-driven job losses
  48. Pain of police killings ripples outward to traumatize Black people and communities across US
  49. Western fires are burning higher in the mountains at unprecedented rates in a clear sign of climate change
  50. Despite federal moratorium, eviction rates returning to pre-pandemic levels