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SUSTAINABILITY AND FREIGHT TRANSPORT
COST 355 (WATCH) WORKING GROUP 1
Christophe Rizet ([email protected])
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 2
Defining our objectives
Freight and sustainability is large : Our proposal for this WG is to focus on global environment : energy consumption and GHG emissions.
INRETS input in this WG (Supply chain)
We should keep in mind the possible convergences and synergies with WATCH other WGs.
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 3
Convergences and synergies with WATCH other WGs
General objective of Watch : analysis of changes in behaviour for a better sustainability of transport
WG1 : freight, energy & GHG WG2 : car ownership and car use WG3 : National transport surveys
(travellers)
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 4
Why energy consumption (& GHG) : World CO2 emission by sector
0
2000
4000
6000
8000
10000
12000
1990 2000
Energy(+26%)
Indus &build. (-7%)
Road(+29%)
o. transp.(+25%)
o. activit. (-6%)
Source : IEA Kyoto
objective for EU : - 8% (2010/1990)
Next objective (IPCC) North : 75% (2050/1990)
Transport & Energy the big problems
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 5
GDP and Transport Growth : no decoupling in Europe (EU 15 ; source « EEA Signals 2004 »)
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 6
Transport Emission of Air pollutants : mainly GHG (EEA 31 ; source : EEA Signals 2004)
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 7
GHG Emissions in Europe : Kyoto objectives & 2001 situation
-13-8
-21
0 0
-21
25
13
-7
-28
-6
27
15
4
-13-8
50 2 5
0
1824
31
7
-44
4
3632
-3
-12
-2
-50
-40
-30
-20
-10
0
10
20
30
40
50
. % p
ar ra
ppor
t à 1
990
.
Kyoto 2001
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 8
Reduction of GHG Emissions & the economy
What could be done to reduce significantly energy consumption in the transport sector without stopping the economy ?
Shippers Carriers Public authorities
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 9
Freight, energy & GHG : disaggregated observation
- 1 Vehicles - 2 Shipment (transport chains)
- 3 Shippers - 4 Supply chain
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 10
1 The vehicle approach
Necessary for any disaggregated approach
European projects : MEET, ARTEMIS
Simple model doesn’t exist for modes such as rail & waterways
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 11
Vehicle Consumption as a function of its total weight (from MEET Hickman 1997)
0
10
20
30
40
50
60
70
0 10 20 30 40
Poids total du véhicule [tonne]
Con
so. g
azol
e [
en l/
100k
m]
20 km/h
40 km/h
60 km/h
80 km/h
Euro 2
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 12
Vehicle Consumption as a function of its total weight (from Roumegoux 1995)
consommation selon le poids
y = 0,8921x + 10,015R2 = 0,9571
y = 0,674x + 16,196R2 = 0,9782
0
10
20
30
40
50
0 5 10 15 20 25 30 35 40 45
poids en tonnes
l./ 1
00 k
m
Route
Autoroute
Linéaire (Route)
Linéaire (Autoroute)
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 13
2) Shipment & transport Chain
Per shipment, 2 new problems arise Assign part of the vehicle
consumption to the shipment Trace the shipment along the
transport chain (more than half the shipments use complex chains, with several vehicles)
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 14
2) Energy efficiency per shipment : goe/tkm is very scattered
1
10
100
1000
10000
100000
0,001 0,01 0,1 1 10 100 1000
consignment weight.
Uni
tary
ene
rgy
cons
umpt
ion
.
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 15
2) Per shipment distances :on the network or straight line
Consumption related to distance
- covered on the network (goe/tkm)
- Straight Line (goe/tkmSL).
Differences come from- The networks- The places of
transshipment.0
10
20
30
40
50
60
70
80
90
Ownaccount
H&R 1leg
H&R >1leg
Sea
Goe / tkm
Goe/tkmSL
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 16
3) Shippers logistical choices grouping shipments
0
10
20
30
40
50
60
sample1 sample2
Gep/Tkm groupés
non groupés Les consommations unitaires, en Gep/tkmVO par chaîne de transport, sont plus importantes- pour les envois groupés (50 gep/tkm)- que pour les non groupés (35)
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 17
3) Shippers choices : weight and distance in the global grouping effect
0
0,5
1
1,5
2
2,5
3
3,5
4
4,5
goe
/ tk
mS
L
Sample1 Sample 2
Weight effect
Distance effect
Total grouping
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 18
3) Shippers : Just In Time & energyconsumption
0
5
10
15
20
25
30
35
40
45
goe/
tkm
maximum delivery time
1 week
2 - 3 w.
> 3 weeks
Is Energy efficiency (Goe/tkm) decreasing when delivery time increases ?
(NB : small sample, large confidence intervals)
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 19
3) Shipper approach : INRETS survey
A first shipper survey in 1988 The new shipper survey (2004-
2005) designed to grasp energy consumption
With the objective of modelling freight demand and energy consumption according to the shippers logistical choices.
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 20
4) Energy consumption : the supply chain approach
Our input in this WG INRETS, UoW & CERTH With a cooperation from
companies
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 21
INRETS Supply chain : objective
Analyse the influence of the supply chain organisation type of retailers : Hypermarket or small shop origin of the sourcing Chain organisation : number and localisation
of the warehouses, logistical tools, ..)
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 22
Supply chain : method
Starting from the retailers 2 products are traced
Yogurt : flux tendus et chaîne du froid Textile : sourcing from Asia, magreb,…
2 agglomerations in France (Paris & Aix) plus Greece for yogurt (CERTH) & UK for textile (UoW)
We estimate energy consumption at each step with the operators
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 23
Supply chain yogurt
Estimating energy consumption (and GHG emission) per kg of yogurt all along the supply chain
Comparing these energy consumption per yogurt kg according to the characteristics of the supply chain
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 24
Yogurt Supply chain : the 9 steps of energy consumption
Farm Milk 4 Yoplait yogurt factory
4 Yoplait Warehouse
3 reefer truck
6 Retailer Warehouse
8 Retail shop Consumer
home
5 reefer truck
7 reefer truck9 Person. car
1 tank truck
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 25
Map : V. Guilbault
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 26
Map : V. Guilbault
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 27
Steps 1 (collecting milk from the farms) & 2 (yogurt factory)
Energy consumed in these steps have been estimated with one single company.
For collecting milk : total consumption of the fleet / tonage = 3.5 l. /t. of milk.
More milk is needed and bought with higher energy consumption :9.1 l. / t.
On average : 6 goe/ kg of yogurt For producing yogurt : 74 goe /kg
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 28
Yogurt Supply chain : Steps 3, 5 & 7 : road transport
Haulage Energy consumption / 100 km = f (total vehicle weight) Total weight = empty weight + load Count for empty distance
Reefer energy consumption = f (time) Energy consumption /kg yogurt =
Total consumption per travel / net weight
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 29
Yogurt Supply chain : Steps 4 & 6 : Warehousing
Determine the products ‘ equivalent to yogurt’ & their surface S in the warehouse
Estimate with the Warehouse manager Energy cons. of this surface / year (Es) tonage on this surface / year (Ts)
Warehouse energy / yogurt kg = Es / Ts
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 30
Yogurt Supply chain : Step 8 : retail shops
Energy for the yogurt surface in the shop general energy /m2 of surface + reefer for yogurt coolers (display units)
Retail energy /kg yogurt = Total ‘yogurt place energy’ / net yogurt weight sold An important step for energy
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 31
Yogurt Supply chain : Step 9 : customer travel
The main objective is to differentiate the shop types ; many problems arise
Temporarily our method is : Only car travels are counted, only 1 way Average distance & average purchase weight
(basket) are estimated with the shop managers and from national studies
Energy/ yogurt kg = energy of the average travel / average purchase weight
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 32
Yogurt Supply chain analysis
Comparing the consumption per step (retail shop, warehousing).
Relative importance of each logistical step in the total energy consumption of a supply chain : transport, warehouse, retail, last km.
Comparing the total energy consumption of the different types of supply chain.
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 33
Possible convergences with WATCH WG 2 & 3
WATCH general objective is to analyse changes in behaviour
WG1 is on freight : behaviour = logistical choices
we should also consider the possible evolutions of these choices
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 34
Possible convergences with WATCH WG 2
With WG2 ( car ownership and car use ) possible convergences on land use What type of retail shop (size &
location) is more energy efficient Influence of the town (size & density)
and Land use
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C. Rizet 23/06/2004 COST WATCH 1st WG1 meeting p. 35
Convergence with WATCH WG3
WG3 is on traveller national surveys. Freight analysis and surveys are late compared with traveller : How to observe « freight behaviour » ?
(several possible stakeholders for the shipment : more for the supply chain)
How to observe (or prepare an observation of) the changes in behaviour ?