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Joint Crediting Mechanism Approved Methodology VN_AM001“Transportation energy efficiency activities by installing digital tachograph systems”
A. Title of the methodology
Transportation energy efficiency activities by installing digital tachograph systems, Version 2.0

B. Terms and definitions
Terms

Definitions

Digital tachograph system

A system consists of digital tachograph device andtachograph data analysis system, whose function includes
but not limited to the followings:(a) Provides real-time feedback, such as alert sounds andflashing lights, during instances of inefficient driving,following which the driver adjust to a more efficientdriving pattern in order to deactivate the instant feedback;(b) Continuously records the vehicle’s operation including
time, position, speed, acceleration, etc. for all the time ofoperation; and(c) Automatically analyzes and provides a graphicalrepresentation of a driver’s performance based on recorded
data in order to further improve driving efficiency.

Fuel efficiency

Energy efficiency of a particular vehicle given as a ratio offuel consumed per unit of distance travelled. [kL/km]

Similar type of vehicles

Vehicles that have the same capacity (e.g. 2 t, 10 t, 40 t)
and meet the same emission standards (e.g. EURO2,EURO3) and equipped with the same fuel efficiency
technologies (e.g. radial tires, wind deflector, tire pressure
monitoring system, fuel consumption monitoring system)as the newly added or replaced vehicles.

C. Summary of the methodology1

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Items
GHG

emission

Summary
reduction Improvement of driving efficiency by installation of digital

measurestachograph system to freight vehicle fleets providing to thedrivers a real-time feedback (e.g. alert sounds and flashinglights, etc.) against inefficient driving.
Further improvement of driving efficiency by graphicalrepresentation based on automatic analysis of drivers’
performance.

Calculationofreference The reference emissions are calculated for each freight vehicle

emissionsby multiplying reference fuel efficiency of freight vehicle,
project distance travelled by that freight vehicle, net calorificvalue and CO2 emission factor of fuel used by freight vehicles.

Calculationofproject Project emissions are calculated for each freight vehicle on theemissions

basis of monitored fuel consumption, net calorific value andCO2 emission factor of fuel used by freight vehicles.

Monitoring parametersProject fuel consumption by each freight vehicle

Project distance travelled by each freight vehicle

D. Eligibility criteria
This methodology is applicable to projects that satisfy all of the following criteria.
Criterion 1

This methodology applies to freight vehicle fleets to which a digitaltachograph system has been installed.

Criterion 2

Data of fuel consumption and distance travelled before activation of digitaltachograph system is available for each freight vehicle, except for the cases ofapplication of Option (c) to the reference fuel efficiency (ηRE,i) in Section F.2.
The data is to be collected for at least 60 days within 4 months of lower
monthly mean temperature of the year (November, December, January andFebruary).

Criterion 3

The project includes feedback of a driver’s performance with the graphicalrepresentation to the driver regularly, at least once in three months.

Criterion 4

The project does not involve a fuel switch in existing freight vehicles, except
for an optional switch to biofuel blends where the blending ratio is not greaterthan 20% by volume, in which case emission reductions are discounted by thepercentage of biofuel in the blend.

Criterion 5

The project participants identify each freight vehicle included in the project,2

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and ensure that the type of service of the freight vehicle is the same before
and during the project (e.g. refrigeration vehicle remains as a refrigeration
vehicle, etc.).
Criterion 6

A plan to present new reference data for freight vehicles of new routes in caseroute changes have occurred due to construction of new expressways or tomodal shift after the introduction of the project is prepared.

E. Emission Sources and GHG types
Reference emissions
Emission sources

GHG types

Consumption of fossil fuel by freight vehicles

CO2

Project emissions
Emission sources

GHG types

Consumption of fossil fuel by freight vehicles

CO2

F. Establishment and calculation of reference emissions
F.1. Establishment of reference emissions
Reference emissions are calculated for each freight vehicle by multiplying reference fuelefficiency of the freight vehicle, project distance travelled by that freight vehicle, net calorificvalue of the fuel used, and the CO2 emission factor of the fuel used.
The reference fuel efficiency is determined conservatively for each freight vehicle based on
actual measurement before activation of digital tachograph system in the following manner toensure the net emission reductions.
1. Due to the use of air conditioners, fuel efficiency of the freight vehicle tends to worsen as theatmospheric temperature becomes higher.
2. Selecting data for calculation of reference fuel efficiency during the months with lower
temperature will result in improved fuel efficiency, leading to the ensuring of the net emission
reduction.
3. Therefore, data to determine reference fuel efficiency is collected for at least 60 days within 4months of lower monthly mean temperature of the year. Based on average temperatures inHanoi, Da Nang and Ho Chi Minh City, these 4 months will be November, December, January
and February.

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F.2. Calculation of reference emissions: Reference emissions during the period p [tCO2/p]: Reference emissions of freight vehicle i during the period p [tCO2/p]: Reference emissions of freight vehicle i during the period p [tCO2/p]: Reference fuel efficiency of freight vehicle i [kL/km]: Project distance travelled by freight vehicle i during the period p [km/p]: Net calorific value of fuel used by freight vehicle i [GJ/kL]: CO2 emission factor of fuel used by freight vehicle i [tCO2/GJ]: Reference fuel efficiency of freight vehicle i [kL/km]: Fuel consumption by freight vehicle i measured during the period b
before activation of digital tachograph system [kL/b]: Distance travelled by freight vehicle i measured during the period b
before activation of digital tachograph system [km/b][New addition and replacement of freight vehicles]
The reference fuel efficiency (ηRE,i) for freight vehicles newly added to the fleet and added toreplace the existing freight vehicles after the start of the project is determined using one of thefollowing options:(a) The reference fuel efficiency is estimated by averaging the reference fuel efficiencies ofvehicles in the fleet which are the same models and travel the same route as the newly added
vehicle. Routes with the same origin and destination (O.D.) are considered as the same routes.
The O.D. can be city names (e.g. Hanoi, HCMC, etc.) in case that the vehicle travels between
cities or more detailed area names in case that the vehicles travel within a city;(b) If data cannot be obtained from vehicles with the same model and the same routes, thereference fuel efficiency is determined using obtained data from newly added freight vehicles
before activation of digital tachograph system for at least 60 days within 4 months of lower
monthly mean temperature of the year (November, December, January and February); or(c) If neither option (a) nor (b) can be applied, the reference fuel efficiency is estimated by4

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averaging the fuel efficiency values of the highest 20 % fuel efficiency vehicles of the similar
type of vehicles in the fleet before activation of digital tachograph system, as determinedaccording to travel distance of each vehicle for at least 60 days within 4 months of lower
monthly mean temperature of the year (November, December, January and February).
[Construction of new expressways or a modal shift]
In case route changes have occurred due to construction of new expressways or to modal shift(e.g. shift from truck to rail) after the introduction of the project, project participant present newreference data for freight vehicles of new routes as per the provisions for new addition andreplacement of freight vehicles.
[(Recommendation) Estimation of reference emissions using freight ton-km]Project participants are recommended to estimate reference emissions using reference fuelefficiency of freight vehicles calculated with freight ton-km data obtained before activation ofdigital tachograph system to compare reference emissions calculated with reference fuelefficiency of travel distance.

G. Calculation of project emissions: Project emissions during the period p [tCO2/p]: Project emissions of freight vehicle i during the period p [tCO2/p]: Project emissions of freight vehicle i during the period p [tCO2/p]: Project fuel consumption of freight vehicle i during the period p [kL/p]: Net calorific value of fuel used by freight vehicle i [GJ/kL]: CO2 emission factor of fuel used by freight vehicle i [tCO2/GJ]

H. Calculation of emissions reductions
Taking into account possibilities of emission reductions from other factors than installation of5

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digital tachograph system, emission reductions for the project is limited to 10% of the reference
emissions.

: Emission reductions during the period p [tCO2/p]: Reference emissions during the period p [tCO2/p]: Project emissions during the period p [tCO2/p]

I. Data and parameters fixed ex ante
The source of each data and parameter fixed ex ante is listed as below.
Parameter

Description of dataSource

Net calorific value of fuel used by freight Country specific data orvehicle i [GJ/kL]

IPCC default value from“2006 IPCC Guidelines for
National Greenhouse Gas
Inventory”.
Lower limit value of thedefault net calorific value isapplied.

CO2 emission factor of fuel used by freight

Country specific data orvehicle i [tCO2/GJ]

IPCC default value from“2006 IPCC Guidelines for
National Greenhouse Gas
Inventory”.
Lower limit value of thedefault CO2 emission factor
is applied.

Fuelconsumption

by freightvehicle

i Purchasebillsormeasured during the period b before activation consumption recordsof digital tachograph system [kL/b]
Distance travelledby freightvehiclei Driver logs

measured during the period b before activationof digital tachograph system [km/b]
Reference fuel efficiency of freight vehicle i Calculated

data

before[kL/km]ofdigitalactivation
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tachograph systemHistory of the document
Version
02.0

Date20 October 201601.0

14 January 2015

Contents revised
JC5, Annex 8
 Addition of a new option for determining the reference
emissions for freight vehicles newly added to the fleet
or added to replace existing freight vehicles.
 Revision of the description of the Criterion 2.
 Addition of the definition of "Similar type ofvehicles".
JC3, Annex 1
Initial approval.

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