Written question asked by Teresa Gorman (Conservative) on Tuesday, 25 May 1999, in the House of Commons. It was due for an answer on Tuesday, 15 June 1999. It was answered by Glenda Jackson (Labour) on Tuesday, 15 June 1999 on behalf of the Department of the Environment, Transport and the Regions.

Dept of the Environment Transport and the Regions

Question: To ask the Secretary of State for the Environment, Transport and the Regions, What factors underlie the use of tonnes of carbon as a measure for greenhouse gas emissions from motor vehicles. (Failed OPQ).

Answer: Mrs. Gorman: To ask the Secretary of State for the Environment, Transport and the Regions what factors underlie the use of tonnes of carbon as a measure for greenhouse gas emissions from motor vehicles. [85811] Ms Glenda Jackson: Under international guidelines, greenhouse gas emissions are measured in terms of their global warming potential. Conversion to a common unit of measurement (whether in tonnes of CO2 equivalent or tonnes of carbon equivalent) allows comparisons to be made between countries, between various policies and measures and between different greenhouse gases.

Secondary information

Type: Written question
Reference: 85811; 333 c80W
Session: 1998-99
Question not reached: Yes
Subjects: Air pollution Carbon dioxide Exhaust emissions Motor vehicles Monitoring