Browsing: Features

A complete history of the traffic signal

The evolution of the traffic light can be traced back some 200 years, but before becoming the reliable system we know today it has had to recover from a number of design flaws and evolutionary dead-ends – as well as all-out explosions. In this exclusive extract from his new book Traffic Signals, Alistair Gollop (pictured), senior ITS consultant at Mott MacDonald, presents what is perhaps the most complete history of traffic signal design ever compiled. It is just the first chapter of the book, which is a comprehensive guide to traffic signals, from first principles and design issues, to equipment and testing, commissioning and assessments. It is a complete introduction to the subject and likely to be of interest to traffic management practitioners of all levels.

POLL RESULTS: The future of DSRC in connected signal systems is uncertain

Even though such systems are still very much in their infancy, the days of DSRC (direct short range communication) being used in connected signal systems are already numbered, according to the majority of transportation professionals who voted in a Traffic Technology Today poll – the results of which are published today (January 15, 2016).

Thought leaders spark debate at ITS World Congress

Traffic Technology Today has been speaking exclusively to some of the most influential thought leaders at the ITS World Congress in Bordeaux, France, this week (October 5-9), getting news on the latest research projects and opinion on where the industry is heading. Here are highlights from six of the best conversations we’ve had over the past few days.

INTERVIEW: Coordinator of Europe’s largest self-driving vehicle project cautions that a rush to automation could have downsides

It’s easy to get carried away with visions of a driverless-vehicle Utopia – an emission-free pod picks you up from your front door at the touch of a button and whisks you quickly and safely to your destination, while you relax or work in its comfortable interior. But Adriano Alessandrini, project coordinator for CityMobil2, Europe’s largest automated vehicle project, has a more cautious vision of our autonomous future.

INTERVIEW: Why Audi’s ‘autonomous’ cars will always have a steering wheel

Udo Ruegheimer, head of communications for technology and innovation at Audi, speaks to Guy Cressingham about the recently revealed R8 e-tron piloted-driving prototype (pictured), and explains why their current vision of the future of automotive transportation doesn’t involve taking the driver out of the picture altogether

Electric dreams of an autonomous future

Two massive, and yet so far mostly separate, areas of innovation in transportation are autonomous and electric vehicles. Nevertheless, when AVs finally become an everyday reality it is almost impossible to imagine them as anything but EVs. Energy storage and EV expert Guy Cressingham investigates how these two research roads are now converging on the same destination – and what challenges will have to be overcome before we get there.

Autonomous vehicles will force authorities to reassess yellow-light formulas

Academics Brian Ceccarelli and Joseph Shovlin of North Carolina’s Research Triangle, have conducted extensive studies into yellow change interval formulas. Here, in an update to their 2013 Traffic Technology International feature on the subject, they join forces with personal injury lawyer D Hardison Wood to look at how autonomous vehicles will affect traffic signal timings… and how they could finally force authorities to curb unfair practices.

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