“While there have been many important developments in ITS over the past 10 years, the most impactful has been the development of the iPhone in 2007, the first widely successful smartphone in the US”

The past 10 years also saw the successful

launch and operation of the USDOT’s Inte- grated Corridor Management (ICM) initiative that integrates the management of transit, highway and arterial transportation net- works along urban and interurban corridors. High Occupancy Toll (HOT) lanes are con- tinuing to expand across the country, most of these HOT lane projects are funded and operated by private companies in some form of public/private partnerships.

SAFETY Important vehicle safety research and deployments have also been conducted in the past 10 years. As of 2007, 18 States had deployed core Commercial Vehicle Informa- tion Systems and Networks (CVISN) program functions, with 27 States in the process of deployment, and the remaining five in the planning stages. This program implements tools for interstate credential administration, roadside electronic screening, and safety information exchange. During this same time, the USDOT’s In-

Vehicle Based Safety Systems program pio- neered research in forward collision warning, lane departure warning, blind spot monitor- ing, and collision avoidance systems. This research led to the widespread and growing deployment of these safety systems.

ITS 2.0: RISE OF THE SMARTPHONES While there have been many important developments in ITS over the past 10 years, the most impactful has been the develop- ment of the iPhone in 2007, the first widely successful smartphone in the US. Smart- phones not only have had a huge impact on applications such as mapping, naviga- tion and routing, they also created a huge demand for low-cost sensors. This increase in demand resulted in economies of scale that resulted in order of magnitude reduction in costs for sensors, including accelerometers, gyroscopes, magnetometers, inertial meas- urement units and solid state cameras. In addition, the presence of smartphones

in vehicles has increased the number of vehicles that can serve as mobile probes by a similar magnitude, enabling collection of traffic flow data to expand from limited urban freeway coverage to nationwide cov- erage on both highways and arterials. This, in turn, has led to a complete shift in the public and private roles in traffic data collection. In the early days of ITS, traffic information pro- viders sought to obtain the limited (but best available) data provided by the public sector. Today, the reverse is true, with public agen-

cies subscribing to the far more complete data sets provided by private companies. Smartphones also enable travelers to

engage with other travelers and transpor- tation providers through the use of social media, such as Twitter and the traffic or incident reporting functions of various navigation apps, such as Waze (pictured above). Many agencies operating TMCs have decided to distribute traveler informa- tion through the use of social media, in part because their customers expect it. Beyond traveler information, neither Transportation Network Companies nor shared use trans- portation systems such as Mobility as a Ser- vice (MaaS) and Mobility on Demand (MOD) would be possible without smartphones. Of course, the smartphone was not the

only major development or trend in ITS. Other developments have included the move to open road tolling, which eliminates toll plazas and allows vehicles to operate without slowing down, and the transition to more open data and open source soft- ware, both across government agencies and within the Federal ITS program in particu- lar. The USDOT had already been a pioneer in open sourcing in the 2000s through the NGSIM program, TRANSIMS, Quickzone, and winter Maintenance Decision Support Sys- tem programs. However in 2012, it became the formal policy of the connected vehicle mobility program that all possible data and software developed under that program using Federal funding be openly released. The Open Source Application Development Portal ( and the Research


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