What is the Oahu Metropolitan Planning Organization?

The Oahu Metropolitan Planning Organization, commonly called OahuMPO, is responsible for coordinating transportation planning on Oahu.

Although OahuMPO serves as the metropolitan planning organization for the two urbanized areas on Oahu (Honolulu and Kailua-Kaneohe), OahuMPO coordinates transportation planning for the entire island.

Legal authority

The Federal Surface Transportation Assistance Act of 1973 (see Code of Federal Regulations Chapter 23 Part 450) required the formation of a metropolitan planning organization (MPO) for any urbanized area with a population greater than 50,000. Those municipalities with a population greater than 200,000 are further designated as a Transportation Management Area (TMA). OahuMPO is a TMA.

This mandate was based on the need to ensure that existing and future expenditures for transportation projects and programs were based on a comprehensive, cooperative, and continuing (3-C) planning process. Federal funding for transportation projects and programs are channeled through this planning process.

OahuMPO was designated by the Governor effective June 17, 2015. The Designation Agreement was signed by the Governor of the State of Hawaii and Chairperson of the City Council of the City and County of Honolulu. Act 132, Session Laws of Hawaii 2015 repealed Section 279E of the Hawaii Revised Statutes and conforms to and is consistent with the requirements of Title 23 United States Code Section 134, Title 49 United States Code Section 5303, and 23 Code of Federal Regulations Subpart C. The Act was signed by the Governor on June 19, 2015 and became effective on July 1, 2015.


OahuMPO’s function is to coordinate the activities of the 3-C transportation planning process on Oahu.  Participating agencies include the City and County of Honolulu, the State of Hawaii, the Honolulu Authority for Rapid Transportation (HART).

The OahuMPO comprises four parts:

Implementing Agencies

Implementing agencies include:

dpp-logo City Department of Transportation Services
Honolulu Authority for Rapid Transportation
hawaii-logo State Department of Transportation

The responsibilities of OahuMPO and its participating agencies are identified in a Comprehensive Agreement dated July 20, 2015 signed by the Governor, the Executive Director and Chief Executive Officer of the Honolulu Authority for Rapid Transportation, the Presiding Officer and Chair of the City Council of the City and County of Honolulu (as the transit operator), and the OahuMPO Policy Board Chair.