California Department of Transportation

Future Deployment


Efficient Development of Advanced Public Transportation Systems
(EDAPTS Smart Transit System)

“Have I missed the bus?” That is the question that EDAPTS has answered for transit users in small communities using transit as a viable mode of transportation. The small transit system operator typically has problems maintaining schedules and is often faced with elevated safety concerns for drivers and passengers when buses are on long headway sections of a route, especially in remote areas. EDAPTS has helped transit users by implementing the following elements: 

  • Automatic Vehicle Location (AVL) using the Global Positioning Satellite (GPS) system
  • Dynamic Messaging Sign (DMS) for real-time bus arrival information at bus stops
  • Solar power option for the DMS to allow mounting at remote, unpowered bus stops
  • Central dispatch software and internet web page showing current bus locations and schedule adherence data
  • Silent emergency alarm for situations requiring police/emergency intervention
  • Mobile Data Terminal (MDT) monitoring bus data sources, calculating and displaying information to drivers, and route relevant bus data information to the RF modem
  • Card reader input for magnetic or electronic fare media

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Smart Parking

When you think about parking, do the words, dynamic, intelligent, or efficient come to mind? More likely it’s frustration, shortage, or lack of space.

A new research effort is seeking to change this parking paradigm. Working with several project partners, researchers are conducting a field trial to test a new service that permits dynamic management of parking spaces at the Rockridge Bay Area Rapid Transit (BART) District station in Oakland.

The project’s broader goal is to provide real-time transit parking information on the highway and advance reservations to increase transit ridership.

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Adaptive Transit Signal Priority (ATSP) Field Operational Tests

Physical System ArchitectureTransit Signal Priority (TSP) has been identified as a critical technology for the deployment of Bus Rapid Transit (BRT) systems and for improvement of traditional transit services. Priority to transit vehicles reduces travel times, improves service reliability, increases ridership and reduces the transit agencies' operating costs. The objective of ATSP is to provide priority to transit vehicles if warranted while trying to minimize negative impacts on the rest of the traffic. The aim of this project is to conduct field operational test to verify the effectiveness of ATSP.


Vernal Pool Research

Vernal pools are unique and highly threatened wetlands. Caltrans is often required to mitigate for the loss of vernal pool habitat. Vernal PoolSome vernal pool species are listed under the Endangered Species Act. Because intensive agriculture and urban development are expanding in areas with vernal pools their conservation is important. The objective was to refine the conceptual models of vernal pool hydrology, and to answer questions about: the importance of the watershed and drainage system to the vernal pools; the possible effects of truncating the watershed or eliminating upstream pools; and the potential role of perched aquifers, and subsurface connections among pools, in controlling the length of inundation. Though vernal pools may superficially appear to be similar, they may in fact, exhibit different hydrologic behaviors, even in the same vernal pool complex. The conceptual models can be applied now as qualitative tools for forecasting the impacts of projects to vernal pool hydrology.


The Transfer Tank Longitudinal Sealer (TTLS)

Transfer Tank Longitudinal SealerLongitudinal crack sealing machines are ideally suited to seal joint cracks between PCC slabs as well as transitions between PCC slabs and AC shoulders. The TTLS equipment will seal longitudinal cracks at a continuous speed up to 5 mph. Since longitudinal cracks typically represent the largest share of highway cracks sealed, high production longitudinal sealing can play a significant role in reducing the miles of open pavement cracks, which leads to premature pavement deterioration.

Related Documents:

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WeatherShare, Phase II

WeahterShareWeatherShare is a web site that provides relevant road weather information that is easily accessible by incident responders and the traveling public. WeatherShare streamlines and integrates road weather data from various sources into one single source.

For additional information, please visit this Web site

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Responder Study, Phase II

The Responder System uses a Tablet PC for collecting, tracking and sharing incident information between at-scene responders, the Redding Traffic Operations Center (TOC) and secondary incident responders, facilitating management of the incident scene and improving the effectiveness of response activities.

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ShakeCast – Developing a Tool for Rapid Post-Earthquake Response

ShakeCastThe Division of Research and Innovation currently working with the United States Geological Survey (USGS) to develop and implement a Caltrans-specific version of ShakeCast, a post-event analysis tool that could ultimately lead to changes in the way Caltrans responds following a major earthquake. ShakeCast is a web-based application that, within ten minutes of an event, automatically retrieves measured earthquake shaking data, analyzes this against individual bridge performance characteristics, and generates inspection prioritization emails and other web-based products for responders

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Bridge Height Measurement System

Bridge Height Measurement SystemResearchers have developed a prototype system for on-the-fly bridge profile sensing. The vehicle-based sensing system uses a scanning laser to measure range and reflected power from the bridge and the roadway. The operation occurs at highway speed; i.e., with no fixed or rolling closure.

The laser data is analyzed by custom software to determine bridge height measurements, as well as lane widths and other horizontal dimensions. The software includes a user interface for interactive fine-tuning of the results. These dimensions can then be used to update a two-dimensional profile of the bridge and the corresponding databases in support of overheight vehicle permitting.

Transportation Safety and Mobility

Vehicle Infrastructure Integration (VII)

VII is a public-private challenge to investigate the feasibility of a nationwide deployment of vehicle-to-vehicle and vehicle-to-infrastructure dedicated short range communication (DSRC) based communication with the primary goal of enhancing road safety and improving mobility and convenience. The envisioned vehicle-infrastructure communication systems will:

  • Implement safety features that prevent vehicle crashes;
  • Provide unprecedented levels of reliable traveler information
  • Give transportation managers full knowledge of the real-time operating conditions on the nation's roadway network.

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Google Earth ITS Field Elements Project

Using rudimentary software scripting tools, this project maps California intelligent transportation systems (ITS) data spatially on Google Earth and updates this data every three minutes.


Planning/Policy/System Information

ITS Decision: Gateway to Understanding and Applying ITS)

The intelligent transportation system (ITS) decision website provides an up-to-date overview and evaluation of the deployment of ITS products and services at local, state, national, and international locations where they have been deployed. Users will learn about costs and benefits, risks and roadblocks, and deployment lessons learned. The website will also provide ITS decision making tool box as one integrated planning suite of models for Caltrans planner’s and engineer’s (and its partners) and gives guidance on ITS Architecture and Architecture conformity for ITS technologies.