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Study finds speed under 20mph encourages cycling to work

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Washington: A study found that nearly 35,000 routes to work showed that people were most likely to cycle when traffic speeds along their route were less than 20mph.

The research has been published in the ‘International Journal of Sustainable Transportation’.

Although roads with a high volume of traffic also dissuaded cycling, the study by researchers at the University of Surrey found that traffic speed is the greater issue, particularly for women, who are already under-represented in cycling.

The research team also found that cycle paths encouraged higher levels of cycling, but their effectiveness depended on local traffic conditions. The team’s findings, which looked at routes to work in Surrey, UK, could help local authorities identify where best to separate cycle and motor vehicle routes to encourage more cycling.

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Routes crossing busy roads also deter potential cyclists. Results showed that commuters are less likely to cycle if their route to work crosses roads with traffic that is both fast-moving and high volume. Surprisingly, the proportion of heavy goods vehicles on roads or at junctions showed little impact on commuters’ willingness to cycle.

The study analyzed traffic data for all roads and cycle routes in Surrey to look at how different vehicle speeds, volumes, the proportion of heavy goods vehicles (HGVs), and the amount of cycling infrastructure along the shortest route to work corresponded with the proportion of commuters choosing to cycle. It also considered distance, hilliness and the effect of traffic crossing the route at junctions. In total it examined nearly 35,000 routes to work for 172,000 commuters living in Surrey and who lived between two and five kilometres from work a distance that should be cyclable for many.

Demand for bikes surged during Covid-19 lockdowns, and councils have rushed to install temporary cycle lanes as more people take up walking and cycling. If the UK is to achieve its target of reducing carbon emissions, it will be important for councils to maintain this increased interest. The Surrey research helps town planners identify what interventions would be most effective and where they should be placed.

The University of Surrey’s Dr Susan Hughes, who develops and applies computer models relating to the science of the environment, said, “Cutting speeds may be unpopular with drivers, but our research shows it does encourage people onto their bikes. It’s a change that, if implemented strategically, may encourage more people to cycle, with the added benefit on people’s health from reduced carbon emissions. Hence, there are opportunities to make towns more attractive to cyclists.”

Dr Nick Grudgings, the lead author, said, “Our findings can help local authorities make the best decisions about where to invest in cycling infrastructure. More cycling doesn’t just mean towns and cities are reducing their CO2 emissions, it also means commuters are keeping active and reducing their risk of heart disease, depression and premature mortality.”

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1 Comment
  1. zortilonrel says

    Real clear site, regards for this post.

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