Work Zone Data Initiative Activity Update

The Work Zone Data Initiative (WZDI) was created to gather best practices, educate practitioners, and move everyone to more standardized methods of data collection and analysis for work zones. This has included the development of a data dictionary, standard data elements and formats, and much more. The FHWA Work Zone Management Program recently published their quarterly newsletter detailing the progress made in this area. Learn more HERE.

Download the Work Zone Activity Data Needs & Opportunities report HERE.

This report was produced by Jerry Ullman and Melisa Finley of TTI. It looks at the benefits we can expect from more consistent data collection. In particular, local and state agencies, private data consumers, and contractors will all be able to compare projects, work zone impact mitigation strategies, and work zone design to find the safest, most efficient methods in any given situation. The benefits will be significant.

But there are many challenges as well. Currently work zone data collection in inconsistent due both to varying practices from one agency to the next and to a lack of funding. Getting to the point where everyone collects data on all work zones and in the same format will be a formidable undertaking.

And the richness of the data will make it even more complex. Consider the proposed elements for just this one item:

This will not be easy. But the rewards in reduced crashes and improved operational efficiency demand that we move forward. Perhaps we might start with a few “standard” elements such as location, dates, and measures of the temporary reductions in capacity as a way of demonstrating what can be done. Once consumers of this data get a taste, they will demand additional elements. And it will then be much easier to cost justify the effort.

Final Report on Every Day Counts 3

USDOT has published their final report on the activities included in Every Day Counts 3. That included the promotion of work zone ITS. We talked about their efforts in past posts (10/27/14 and 12/14/16 ) and applauded both their efforts and the results, but now we can look at the final numbers. Read the report HERE.

When they began in January 2015 there were 7 states that had already made the use of technology to reduce work zone traffic impacts a mainstream practice. 8 more states were in the assessment stage at that time. Bu December of 2016 – just two short years later – 11 included work zone ITS as a mainstream practice and 13 more had moved to the assessment stage – a 37% increase!

More important, those efforts are already bearing fruit. Wisconsin’s initial tests indicate a significant reduction in end-of-queue crashes. They are now working with a university partner to develop a queue warning system decision support tool to help project designers know when to include a system in their jobs.

Illinois DOT has awarded on-call contracts to provide work zone ITS system in three of its districts. They, too have studied the effectiveness of these systems. Once they finalize their research they plan to incorporate that in their future system deployments.

Massachusetts DOT “uses smarter work zone technology applications in all construction work zones that meet a specific impact level and a preset scoring criteria threshold.”

And New Jersey DOT developed scoring criteria for designers to use when determining whether work zone ITS should be included in a project. Work zone ITS was also added to its preliminary engineering checklist as a tool for mitigation of work zone impacts.

Thanks again to FHWA for their foresight and hard work on this. It was just the push states needed to get started in work zone ITS and is sure to save a great many lives in the years to come!

 

FHWA Request for Information Regarding Automated Driving Systems

This blog just posted a couple of days ago, but this topic can’t wait, so we are posting again today. On January 18th the Federal Register published a Request For Information from FHWA regarding automated driving systems (ADS). It asks DOT’s, manufacturers, trade associations, and other interested parties for their answers to questions in ten specific areas.  Download Docket FHWA-2017-0049. All comments must be received by March 5th, so please get started.

The work zone ITS world should be most interested in questions 4, 5, 9 and 10. You will also be interested in many of the other questions if you are involved in static signs, pavement marking or other permanent roadway safety infrastructure.

First, let’s commend the FHWA for asking these questions. It wasn’t long ago that we worried that automakers and regulating agencies did not know what they did not know. A great deal of time and effort has gone into building coalitions with these folks and it appears that is beginning to pay off.

So lets’ reward their curiosity with well written and timely responses. You can do so individually and/or through your industry associations such as the American Traffic Safety Services Association.

We will start the ball rolling now with these suggested responses to the four questions mentioned earlier. These are short in the interest of time, but should be fleshed out in any formal response.

Question 4: How should FHWA engage with industry and automation technology developers to understand potential infrastructure requirements?

Include work zone ITS providers and trade associations like ATSSA in the conversation. Many of us are already participating in AV events including the Automated Vehicles Symposium, the ITS World Congress, etc. Presentations at these events focused on work zones have lead to many productive conversations and several “ah-ha” moments for AV manufacturers. Please encourage more of this going forward.

Question 5: What is the role of digital infrastructure and data in enabling needed information exchange between ADS and roadside infrastructure?

Work zones will be the most common anomaly in digital maps unless we begin preparing now. Arrow boards, flagger stations, and other active work zones can be equipped to report their location and other pertinent information automatically and in real time. The same could be done for emergency responders and special events. Only by doing so can we hope to prevent crashes like the one reported January 23rd  ( Mercury News ). Safety is the driving force behind this initiative, but it will also reduce drive times, reduce air pollution, and improve the efficiency of our road networks.

Question 9: What variable information or data would ADS benefit from obtaining and how should that data be best obtained?

Work zones are the single most frequent cause of non-recurring congestion. Clearly real-time work zone data should be included. This data must include the precise location of the work zone, when and where lanes are closed and when they are opened up again, where flagging operations are taking place, and any other important features of the traffic control including lane splits, narrow lanes, crossovers, and full closures and detours. Finally delay times should also be included whenever available.

Question 10: What issues do road owners and operators need to consider in terms of infrastructure modifications and traffic operations as they encounter a mixed vehicle fleet during the transition period to a potentially fully automated fleet?

It is estimated that it will take at least 20 years to reach a point where the vast majority of vehicles are highly automated. Until then work zones will be just as dangerous for conventional vehicles as they are now. Don’t scrimp on traffic control devices, signage or pavement markings in the hopes that they won’t be needed.

As for those automated vehicles, most will not be capable of navigating autonomously though an active work zone. Plan to trigger the vehicles to hand over control to the driver well in advance of the work zone. Studies show drivers need a minimum of 8 to 10 seconds to regain situational awareness.

Work zones, incident response, and special events will test these systems more than anything else. Make them a big part of the conversation now to avoid problems in the not too distant future!