Taipei City has a large number of motorcycle users, and motorcycles
constitute one of the main pollution sources in the Taipei metropolitan area.
In order to realize effective management of mobile pollution source control
operations, in FY 2019 the Environmental Inspection Division,
Department of Environmental Protection, Taipei City Government
commissioned Envimac Technology and Consultants Corporation to
implement the “Taipei City Plan for Strengthening Auditing of Air
Pollutants Emitted by Mobile Pollution Sources (Motorcycles).” The Plan
implementation period was from January 1, 2019 to December 31, 2019.
As of December 31, 2019, the overall Plan implementation
completion rate was 100.0%. A total of 10,304 roadside inspections had
been performed, with a failure rate of 8.5%. Cross-checking against the
motorcycle periodic inspection database showed that 7,590 of the
motorcycles in question were subsequently brought in for re-inspection,
giving a re-inspection rate of 74.7%. License plate recognition technology
was used to record motorcycles on Taipei City roads on 104,085 occasions;
of these, there were 55,242 instances of a license plate number appearing
only once, giving a repeat rate of 46.9%. 38.5% of the motorcycles in
question were registered in Taipei City. A total of 332,386 second reminder
notifications were sent to the owners of motorcycles registered in Taipei
City that had not been brought in for inspection. The cumulative rate of
completed inspection was 49.5%. A total of 16,610 double-registered-mail
were sent to motorcycle owners registered. The cumulative rate of
completion of the inspection was 57.6%.
According to an announcement issued by the Environmental
Protection Administration (EPA), the total number of motorcycles
registered in Taipei City as of December 31 2019 that were required to
undergo periodic inspection was 697,704. The actual number of
motorcycles that underwent periodic inspection was 527,723, representing a periodic inspection completion rate of 75.6%. The number of
motorcycles brought in for inspection that underwent repairs which
brought them into conformity with legal requirements was 33,684. Linear
source emissions coefficient calculations using the EPA's Taiwan
Emissions Data System (TEDS) Version 7.1 showed that the improvement
in air pollutant emissions from motorcycles that underwent roadside
inspection and subsequent repairs can be estimated to equate to a reduction
in carbon monoxide emissions of 947.52 tons per year, and a reduction in
hydrocarbon emissions of 109.96 tons per year.
