Air & Transportation

Future Policy for Motor Vehicle Exhaust Emission Reduction(second report)

- SECOND REPORT FOR INQUIRY No.31,1996 -

Experts Committee on Motor Vehicle Emissions,
Air Quality Committee,
Central Environment Council
November 21, 1997


Table of Contents

  1. Introduction
  2. Current Status of Atmospheric Environment and Viewpoints on Motor Vehicle Exhaust Emission Reduction
  3. Reduction Measures for Exhaust Emissions from Exhaust Pipes of gasoline·LPG Motor Vehicles
  4. Reduction Measures for Fuel Evaporative Emissions from Gasoline Motor Vehicles
  5. Exhaust Emission Reduction Measures for Off-road Vehicles
  6. Future Policy for Motor Vehicle Exhaust Emission Reduction
Attached Table 1:
Target Values for Permissible Limits for gasoline·LPG Motor Vehicles
Attached Table 2:
Durability Running Distance for gasoline·LPG Motor Vehicles
Attached Table 3:
Fuel Evaporative Emissions Test Procedure to Be Applied to Gasoline Motor Vehicles
Attached Table 4:
Exhaust Emission Measurement Mode to Be Applied to Diesel Off-road Vehicles
Attached Table 5:
Target Values for Permissible Limits for Diesel Off-road Vehicles

Names of Members of the Experts Committee on Motor Vehicle Exhaust Emissions, Air Quality Committee, Central Environment Council, and Working Committee


Chukanshin No.120
November 21, 1997

Mr. Hiroshi Ohki
Director-General,
Environment Agency

FUTURE POLICY FOR MOTOR VEHICLE EXHAUST EMISSION REDUCTION
(Second Report)

Sir,
The Central Environment Council has conducted studies and deliberated on the "Future Policy for Motor Vehicle Exhaust Emission Reduction" through Inquiry No.31, dated May 21, submitted to our Council. The Council has reached the following conclusions and hereby reports them.

Yours truly,

Jiro Kondo
Chairman,
The Central Environment Council


In regards to Inquiry No.31, "Future Policy for Motor Vehicle Exhaust Emission Reduction," dated May 21, 1996, the Central Environment Council made an interim report on October 18, 1996, regarding urgent countermeasures to be implemented to reduce hazardous air pollutants. The Expert Committee on Motor Vehicle Exhaust Emissions continually conducted deliberations on the general policy for motor vehicle exhaust emission reduction. Attached to this report is the Second Report of the Expert Committee on Motor Vehicle Exhaust Emissions.

Upon receiving the aforementioned Second Report, the Air Quality Committee conducted deliberations and has decided to accept the Second Report of the Expert Committee on Motor Vehicle Exhaust Emissions as an effective way to promote future reductions in motor vehicle exhaust emissions. The Air Quality Committee deems it necessary to conduct the following measures: [1] Reduction of nitrogen oxides, hydrocarbons, and carbon monoxide emitted from exhaust pipes of those motor vehicles fueled by gasoline and liquefied petroleum gas (LPG) (hereinafter referred to as "gasoline·LPG motor vehicles"); [2] Reduction of hydrocarbons emitted from gasoline-fueled motor vehicle (hereinafter referred to as "gasoline motor vehicles") as fuel evaporative emissions; and [3] Addition of off-road vehicles (referring to large-sized off-road vehicles and small-sized off-road vehicles provided for in the Road Vehicles Act) into applicable motor vehicle classifications that are subjected to the exhaust emission regulations. Furthermore, the Air Quality Committee has concluded that it would be appropriate to continue deliberation on the general policy for reduction of motor vehicle exhaust emissions.

Hence, the Council has made the following report.

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