Organization and mandate

The Canadian Transportation Agency (CTA) is an independent, quasi-judicial tribunal and regulator that has, with respect to all matters necessary for the exercise of its jurisdiction, all the powers of a superior court.

The CTA is made up of five full-time Members; up to three temporary Members may also be named. The Members, who are all based in the National Capital Region, are supported in their decision-making process by some 330 employees and administrative staff.

The CTA has three core mandates

  • We help ensure that the national transportation system runs efficiently and smoothly in the interests of all Canadians: those who work and invest in it; the producers, shippers, travellers and businesses who rely on it; and the communities where it operates.
  • We protect the human right of persons with disabilities to an accessible transportation network.
  • We provide consumer protection for air passengers.

Our tools

To help advance these mandates, we have three tools at our disposal:

  • Rule-making: We develop and enforce ground rules that establish the rights and responsibilities of transportation service providers and users and that level the playing field among competitors. These rules can take the form of binding regulations or less formal guidelines, codes of practice or interpretation notes.

  • Dispute resolution: We resolve disputes that arise between transportation providers on the one hand, and their clients and neighbours on the other, using a range of tools from facilitation and mediation to arbitration and adjudication.

  • Information provision: We provide information on the transportation system, the rights and responsibilities of transportation providers and users, and the Agency's legislation and services.

Our values

Our Code of Values and Ethics outlines the core values and expected behaviours that guide us in all activities related to our professional duties. Our guiding values are:

  • Respect for democracy - We uphold Canadian parliamentary democracy and promote constructive and timely exchange of views and information.

  • Respect for people - We treat people with dignity and fairness and foster a cooperative, rewarding working environment. Integrity - We act with honesty, fairness, impartiality and transparency.

  • Stewardship - We use and manage our resources wisely and take full responsibility for our obligations and commitments.

  • Excellence - We provide the highest quality service through innovation, professionalism and responsiveness.


Scott Streiner, Chair and CEO

Photo of Scott Streiner, Chair and CEO

Scott Streiner was appointed Chair and CEO of the Canadian Transportation Agency (CTA) by the Governor in Council in 2015 and reappointed in 2020. His term runs until July 2021.

Scott has taken a series of steps to enhance the CTA's ability to respond to the needs of the national transportation system, its users, and the communities in which it operates. These include reorganizing and streamlining the CTA's internal structures and processes; recruiting top-notch talent to serve on the executive team; implementing action plans to foster a healthy, high performing, and agile organization; increasing public awareness of the CTA's roles and services; introducing innovative approaches to delivering regulatory and adjudicative mandates; and undertaking a comprehensive review and modernization of all regulations made and administered by the CTA.

Among the most important results of these efforts are the groundbreaking Air Passenger Protection Regulations and Accessible Transportation for Persons with Disabilities Regulations. Following finalization of these regulations, Scott launched major projects to update the CTA's suite of guidance materials, automate complaint intake, and modernize compliance assurance activities.

Scott led the revitalization of the Council of Federal Tribunal Chairs in 2016 and 2017, and is currently Vice Chair of the Board of Directors of the Council of Canadian Administrative Tribunals and a member of the Bureau (steering committee) of the OECD's Network of Economic Regulators.

Prior to joining the CTA, Scott had a 25-year career in the federal public service. His public service positions included Assistant Secretary to the Cabinet, Economic and Regional Development Policy; Assistant Deputy Minister, Policy with Transport Canada; Executive Director of the Aerospace Review; Assistant Deputy Minister with the Labour Program; Vice President, Program Delivery with the Canadian Environmental Assessment Agency; Director General, Human Resources with the Department of Fisheries and Oceans; and Director of Pay Equity with the Canadian Human Rights Commission.

Scott has led Canadian delegations abroad, including to India, China, and the International Labour Organization. He has also served as the Government Member with NAV Canada, Canada's Ministerial Designee under the North American Agreement on Labour Cooperation, Chair of the Council of Governors of the Canadian Centre for Occupational Health and Safety, and a Director on the Board of the Soloway Jewish Community Centre.

Scott has a bachelor’s degree in East Asian Studies from the Hebrew University, a Master’s degree in International Relations from the Norman Paterson School of International Affairs, and a PhD in Political Science from Carleton University.

Elizabeth C. Barker, Vice-Chair

Elizabeth C. Barker, Vice-Chair

Liz Barker began a five-year term as Vice-Chair and Member of the Canadian Transportation Agency (CTA) on April 3, 2018. 

Liz joined the CTA's predecessor, the National Transportation Agency, in 1991 as counsel.  She has held several positions at the CTA, including, most recently, Chief Corporate Officer, Senior General Counsel and Secretary.  She has worked in all areas of the Agency’s mandate over the years, but has specialized in advising the tribunal in complex dispute adjudications and oral hearings on controversial subjects including rail level of service complaints, a wide range of complex accessible transportation disputes, and ministerial inquiries into marine pilotage and the accessibility of inter-city motor coach services.  She has also worked extensively in the development of the Agency’s approach to its human rights mandate, administrative monetary penalties regime, alternative dispute resolution, final offer arbitration, and rail level of service arbitration.  She has appeared as counsel before all levels of court, including the Federal Court, the Federal Court of Appeal, and the Supreme Court of Canada, as co-counsel in Council of Canadians with Disabilities v. VIA Rail Canada Inc., [2007] 1 S.C.R. 650.

Liz was a recipient of the Queen’s Diamond Jubilee Medal in 2016 for her work at the Agency, in particular in accessible transportation, the administrative monetary penalties program, and for her leadership of the Legal Services Branch.

Liz received her law degree from Osgoode Hall Law School in 1987 and her B.A. (Honours in Law) from Carleton University in 1984.  She has been a member of the  Law Society of Ontario since 1989.

Mark MacKeigan, Member

Mark Mackeigan, Member

Mark MacKeigan began a four-year term as a Member of the Canadian Transportation Agency on May 28, 2018.

He comes to the Agency from The St. Lawrence Seaway Management Corporation, the not-for-profit operator of the federal government's Seaway assets, where he was Chief Legal Officer and Corporate Secretary from 2014.

Mark is not entirely new to the Agency, having served previously as a Member from 2007 to 2014 and as legal counsel on specific files in a contract position during 1996.

His transportation law experience includes six years as senior legal counsel with the International Air Transport Association in Montréal from 2001 to 2007, focusing on competition law, cargo services, aviation regulatory and public international law matters. From 1996 to 2000, he was legal counsel with NAV CANADA, the country's provider of civil air navigation services.

Mark began his legal career in private practice in Toronto. After earning a Bachelor of Arts with highest honours in Political Science from Carleton University, Mark obtained his law degree from the University of Toronto and a Master of Laws from the Institute of Air and Space Law at McGill University. He also holds a postgraduate diploma in European Union Competition Law from King's College London.

He is a member of the Bars of Ontario and the State of New York and is admitted as a solicitor in England and Wales.

Mary Tobin Oates, Member

Mary Tobin Oates, Member

After 25 years of public service, Mary Tobin Oates joined the Canadian Transportation Agency on 9 July 2018. As a lawyer, Mary practised in different areas of law, largely in public and administrative law. She appeared before the Pension Appeals Board and the Federal Court of Appeal regarding disability benefits under the Canada Pension Plan and the Old Age Security Act. Mary served as a Board member of the Veterans Review and Appeal Board where she determined eligibility for disability benefits for members of the Canadian Forces and the Royal Canadian Mounted Police. Mary provided legal and policy advice on indigenous issues to the Department of Justice and to Indian and Northern Affairs Canada. She also served as Board member to Tungasuvvingat Inuit, a not-for-profit, charitable organization that provides services to and advocates on behalf of Inuit who live in southern Canada.

Before becoming a lawyer, Mary worked as a technical editor for the Canadian Transportation Accident and Safety Board (now Transportation Safety Board).

Mary received her Bachelor of Arts from Memorial University of Newfoundland and graduated from Osgoode Hall Law School. She has been a member of the Law Society of Ontario (formerly the Law Society of Upper Canada) since February 1997.

Heather Smith, Member

Heather Smith, Member

Heather Smith became a full-time Member of the Canadian Transportation Agency on August 27, 2018. Heather was most recently Vice-President, Operations at the Canadian Environmental Assessment Agency. In previous positions, Heather was Executive Director in the Government Operations Sector of Treasury Board Secretariat, and Director General in the Strategic Policy Branch at Agriculture and Agri-Food Canada (AAFC). Heather held several management positions within Justice Canada, as General Counsel and Head of AAFC Legal Services, General Counsel and Head of Legal Services at the Canadian Environmental Assessment Agency, and General Counsel in the Legal Services Unit of Social Development Canada/Human Resources and Skills Development Canada.

Heather also served as legal counsel at Environment Canada Legal Services and Manager of the Canadian Environmental Protection Act Office at Environment Canada. Heather holds a B.A.(Hons.) from the University of King's College and an L.L.B. from the University of Toronto. She has also earned the Chartered Director (C.Dir.) designation from the McMaster/DeGroote Directors College.


Allan Matte, temporary Member

Allan Matte, temporary Member

Allan Matte was appointed as a temporary Member of the Canadian Transportation Agency effective September 14, 2020. Prior to his appointment, Allan held the position of Senior Counsel with the Agency in its legal services unit. Before accepting a position with the Agency, Allan worked as Counsel with the Department of Justice in the legal services unit of Employment and Social Development Canada, and before that Industry Canada. Allan also worked as Counsel with the federal Office of the Commissioner of Review Tribunals. Allan has appeared as Counsel before numerous administrative tribunals as well as before the courts at all levels including the Ontario Superior Court, the Federal Court, the Federal Court of Appeal and the Supreme Court of Canada.

In 2014, Allan was appointed by the Ontario provincial government as a part-time Member of the Social Benefits Tribunal, a position he held for 5 years until February of 2019.

Allan holds an LLB from Osgoode Hall Law School, a Postgraduate Certificate in Procedural Law, a Postgraduate Diploma in Public Law, and a Master’s degree (LLM) in Human Rights Law from the University of London (UK).

Inge Green, temporary Member

Inge Green, temporary Member

Inge Green was appointed as a temporary Member of the Canadian Transportation Agency (CTA) effective March 31, 2021.

Inge was Senior Counsel with the CTA in its legal services unit. She started working at the National Transportation Agency, the predecessor of the CTA, in 1988 and worked for 32 years in the areas of transportation, administrative, constitutional, and human rights law.

During her time at the Agency, Inge worked in all areas of the Agency’s mandate. She worked on a wide range of domestic and international air matters. She also worked extensively in the development of regulations and acted as a mediator. She advised the Agency on a wide range of oral hearings, including rail level of service complaints and complex accessible transportation disputes. She appeared as counsel before the Federal Court of Appeal, and the Supreme Court of Canada, as co-counsel in the case of Council of Canadians with Disabilities v. VIA Rail Canada Inc.

Inge was the recipient of the Community of Federal Regulators’ Regulatory Excellence Award (2019) as well as the Chair’s Award of Excellence.

Inge obtained her law degree from the University of Ottawa in 1987 as well as a Bachelor of Arts (English Concentration) in 1984.

Toby Lennox, temporary Member

Toby Lennox, temporary Member

Toby Lennox was appointed as a temporary member of the Canadian Transportation Agency on March 31, 2021.

Toby is a lawyer and executive based in Toronto. He practiced corporate commercial law with Osler and then joined the Greater Toronto Airports Authority in 1995 to negotiate the transfer of Toronto-Pearson International Airport to the GTAA. He held the position of Senior Legal Counsel with the GTAA handling a variety of regulatory, administrative, corporate governance and commercial matters. In 2007, he joined the senior management team with the GTAA and held the position of Vice President, Strategy Development and Stakeholder Relations. In this role, among other duties, he had responsibility for overseeing all of the airport authority’s interactions with regulatory bodies and agencies. Toby left the GTAA in 2014 and was asked to work on the creation of Toronto Global, the Toronto Region’s investment attraction agency. He served as CEO of Toronto Global until February of 2021.

Toby holds a BA from Trent University, an MA in International Relations from Dalhousie University and law degrees from Oxford University and Dalhousie University. Toby received his ICD.D designation from the Canadian Institute of Corporate Directors in 2021.

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