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The Honolulu Rail Transit Project promotes environmental, economic, and social well-being by incorporating sustainability practices throughout its planning, design, construction and operations.  HART's practices recognize the unique environmental and cultural qualities of Hawaii, both regionally as well as at the neighborhood level.  Our proactive sustainability efforts will highlight and preserve our 'aina for future generations.


Rail Operations Center

Consistent with the Honolulu Rail Transit Project's commitment to environmental stewardship and social responsibility, the system's Rail Operations Center met its goal of attaining the U.S. Green Building Council’s (USGBC) LEED Silver certification. In order to achieve certification, the Rail Operations Center incorporated water efficient landscaping and fixtures, construction waste diversion, superior indoor air quality, and many other green building features.

About LEED

The Leadership in Energy and Environmental Design (LEED) Green Building Rating System is an internationally recognized standard for developing a high-performance sustainable buildings. The LEED rating system promotes sustainable site development, including access to rail stations, as well as water efficiency, clean energy, recycled and locally sourced materials selection and efficient waste management practices.

About the Rail Operations Center

The Rail Operations Center (ROC) is located on a 43-acre site near Leeward Community College and includes an Operations and Services Building, Maintenance of Way Building, Train Wash Facility, and Wheel Truing Facility.  This facility incorporates nearly 5 miles of track and will accommodate more than 100 rail vehicles for storing, servicing, and repairs.

Honolulu Rail Transit Advantage

Public transportation can reduce greenhouse gas emissions by providing an alternative to driving. On a national scale, transportation accounts for 28% of greenhouse gas emissions.  64% of these transportation emissions come from cars, trucks and SUVs. Electric-powered rail technologies, like the used by the Honolulu Rail Transit Project, produce about 75% less in greenhouse gas emissions per passenger mile than private automobiles.  In addition to providing a clean energy alternative to driving, the Honolulu Rail Transit Project also will help preserve green spaces by facilitating focused development in the rail corridor and reducing carbon emissions related to transportation.

Source: Hodges, Tina, Office of Budget and Policy, Federal Transit Administration, USDOT. January 2009.




[1]  "Assuming all electricity is generated from combustion of oil; the daily 2,440 mBTU energy savings will result in a daily reduction in greenhouse gas emissions of approximately 171 metric tons of CO2".  (FEIS 4-113)  Using an annualization factor of 308, there will be an annual reduction of 52,700 metric tons of CO2.

[2] Information deduced from

Transit-Oriented Development

By 2030, Honolulu's population is expected to increase by over 200,000 people.  This rise in population will add to the housing and transportation challenges already faced by the residents of Honolulu, further increasing development pressure.  Transit-oriented development (TOD), which concentrates housing, shopping and job growth around transit centers can help address this need to grow while minimizing the overall carbon footprint and keeping the country, country.  

A good example of TOD for several Oahu communities along the rail corridor is Fruitvale, an Oakland California neighborhood, where the local community development corporation worked with BART (Bay Area Rapid Transit) to develop the Fruitvale Transit Village, a nine-acre multi-use, walkable community adjacent to the transit station.  The area had originally been proposed for surface parking, but now provides shops, offices, a clinic, child development center, senior center, library, and approximately 300 low- and mixed-income apartments.  Completion of the Fruitvale Transit Village between 1998 and 2004 made the neighborhood more desirable and has led to substantial private market-rate redevelopment in the surrounding neighborhood. 

About TOD

Transit-oriented development (TOD) promotes the use of transit, walking, cycling, and reduced dependence on the private automobile through high-density commercial and residential development near high quality transit nodes, such as rail stations.  TOD increases the convenience of urban amenities by focusing urban design at the pedestrian scale.  Areas around transit stations will feature a mix of commercial and residential development with open spaces, such as parks and plazas. This mixed land use environment will compliment an improved pedestrian experience and seamless transitions between cyclists, buses and rail transit.

TOD is not new to Honolulu.  Many of today's great communities, such as Kaimuki and Kalihi, were built as street car suburbs a century ago.

For more information about TOD, consult the TOD website for the City and County of Honolulu Department of Planning and Permitting.

Art in Transit

The Honolulu Rail Transit Project recognizes the importance of respecting the cultural fabric and history of Oahu.  The Project will include a comprehensive art program and commissioned artwork will be integrated into the design of each station.  Select columns supporting the guideway will also include detailed relief images that express the historical and cultural elements surrounding the stations.

Sustainability Resources

Please visit some of the resources below for more information.

USGBC Hawaii


Carbon Footprint Calculator

American Public Transportation Association

Federal Transit Administration

Honolulu on the Move

HART Honolulu Authority for Rapid Transportation