ROCKS
ROCKS
RO
ROad C
Costs K
Knowledge S
System
Version 2.01 (09/09/02)
September 2002
The World Bank
Transport and Urban Development Department
TUDTR

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Overview
1. Background and Objective
2. Basic Framework – Key Concepts
3. System Components
4. Development Network
5. World Database – Data Description
6. Average and Range Unit Costs
7. Sample Set of Outputs
8. Dissemination and Development
9. System Enhancements & CD

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Background
 Demand for data on road costs
 Data locally available, but scattered and collected
in unsystematic and unstructured ways
 There is a need of a framework to assess cost
differences among regions, terrains, cost types,
contract types, contractor types, etc.
 WB First attempt (1999): Road Works per Km
from 67 WB ICRs (Period 1995 – 1999)
Study found that the level of detail provided in these
documents was limited and that there is a world wide
need for a framework to collect this information

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Objective
Develop an international knowledge system on
road work costs –to be used primarily in developing
countries– to establish an institutional memory, and
obtain average and range unit costs based on
historical data that could ultimately improve the
reliability of new cost estimates.
Reliable estimates of construction costs are
important for:
 comparing different project alternatives,
 justifying a project on economic grounds,
 planning the means of financing it, and
 reducing the risks generated by cost overruns.

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Average and Range Unit Costs
Among many others, average and range unit costs
can be used to:
 monitor and assess in–country road cost
variations overtime,
 compare costs from different financing sources
and at different stages (estimate–contract–actual),
 compare road costs among country regions,
 better understand the impact of different types of
terrain, climate, contract, contractor, etc.,
 generate data for evaluation modules like the life
cycle analysis applied in HDM–4.

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Product 1. Basic Framework – Key Concepts
Concept 1. Road Works Classification and
Predominant Work Activity
Concept 2. Unit Cost Per Length or
Unit Cost Per Area
Concept 3. Database Minimum Data Set
Requirements
Concept 4. Alternative Classes
of Input Data
Concept 5. Single Currency and
Single Reference Date

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Concept 1:Road Works Classification and Work Type
Work Category Work Class Work Type Work Category Work Class Work Type
Preservation Routine Routine Maintenance Development Improvement Partial Widening
Periodic Grading Partial Widening and
Reconstruction
Gravel Resurfacing
Widening
Concrete Pavement
Preventive Treatment Widening and
Reconstruction
Bituminous Pavement
Preventive Treatment Upgrading
Unsealed New Construction New 1L Road
Preventive Treatment
New 2L Highway
Surface Treatment
Resurfacing New 4L Highway
Asphalt Mix New 6L Highway
Resurfacing
New 4L Expressway
Rehabilitation Strengthening
New 6L Expressway
Concrete Pavement
Restoration Number of Lanes
1L - One Lane 4L - Four Lane
Reconstruction 2L - Two Lane 6L - Six Lane

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Concept 1: PRESERVATION WORKS – Predominant Work Activities Recommended Alternative
Work Category Work Class Work Type Predominant Work Activity Unit Cost Unit Cost
Preservation Routine Routine Maintenance Routine Maintenance 1L Road $/km-year
Routine Maintenance Unsealed 2L Highway
Routine Maintenance Block 2L Highway
Routine Maintenance Bituminous 2L Highway
Routine Maintenance Concrete 2L Highway
Routine Maintenance Bituminous > 2L Highway
Routine Maintenance Concrete > 2L Highway
Routine Maintenance Bituminous Expressway
Routine Maintenance Concrete Expressway
Periodic Grading Light Grading $/km
Heavy Grading
Gravel Resurfacing Regravelling $/m2 $/km
Concrete Pavement Concrete Pavement Preventive Treatment $/m2 $/km
Bituminous Pavement Fog Seal $/m2 $/km
Preventive Treatment Rejuvenation
Unsealed Unsealed Preventive Treatment $/m2 $/km
Surface Treatment Slurry Seal or Cape Seal $/m2 $/km
Resurfacing Single Surface Treatment
Double Surface Treatment
Triple Surface Treatment
Asphalt Mix Asphalt Overlay < 40 mm $/m2 $/km
Resurfacing Asphalt Overlay 40 to 59 mm
Rehabilitation Strengthening Asphalt Overlay 60 to 79 mm $/m2 $/km
Asphalt Overlay 80 to 99 mm
Asphalt Overlay > 99 mm
Mill and Replace
Bonded Concrete Overlay
Unbounded Concrete Overlay
Concrete Pavement Concrete Slab Replacement $/m2 $/km
Restoration Concrete Slab Repair
Concrete Diamond Grinding
Reconstruction Reconstruction Unsealed $/m2 $/km
Reconstruction Block
Reconstruction Bituminous
Reconstruction Concrete

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Concept 1: DEVELOPMENT WORKS – Predominant Work Activities Recommended
Work Category Work Class Work Type Predominant Work Activity Unit Cost
Development Improvement Partial Widening Partial Widening to Unsealed 2L $/km
Partial Widening to Block 2L
Partial Widening to Bituminous 2L
Partial Widening to Concrete 2L
Partial Widening and Partial Widening to Unsealed 2L and Reconstruction $/km
Reconstruction Partial Widening to Block 2L and Reconstruction
Partial Widening to Bituminous 2L and Reconstruction
Partial Widening to Concrete 2L and Reconstruction
Widening Widening Adding Bituminous 1L $/km
Widening Adding Bituminous 2L
Widening Adding Bituminous 4L
Widening Adding Concrete 1L
Widening and Widening Adding Bituminous 1L and Reconstruction $/km
Reconstruction Widening Adding Bituminous 2L and Reconstruction
Widening Adding Bituminous 4L and Reconstruction
Widening Adding Concrete 1L and Reconstruction
Upgrading Upgrading Unsealed to Unsealed 2L Highway $/km
Upgrading Unsealed to Block 2L Highway
Upgrading Unsealed to Bituminous 2L Highway
Upgrading Unsealed to Concrete 2L Highway
Upgrading Block to Bituminous 2L Highway
Upgrading Block to Concrete 2L Highway
New Construction New 1L Road New Unsealed 1L Road $/km
New Block 1L Road
New Bituminous 1L Road
New Concrete 1L Road
New 2L Highway New Unsealed 2L Highway $/km
New Block 2L Highway
New Bituminous 2L Highway
New Concrete 2L Highway
New 4L Highway New Bituminous 4L Highway $/km
New 6L Highway New Bituminous 6L Highway $/km
New 4L Expressway New Bituminous 4L Expressway $/km
New Concrete 4L Expressway
New 6L Expressway New Bituminous 6L Expressway $/km
New Concrete 6L Expressway

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Concept 2:
Unit Cost per Length and Unit Cost per Area
It includes all civil
works costs:
 Pavement
 Mobilization
 Drainage
 Major Structures
 Line markings/signs
 Contingencies
 Taxes
It does not include
other agency costs:
 Design
 Land Acquisition
 Resettlement
 Supervision

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Concept 2: (Cont.)
Unit Cost per Carriageway Area
 Cost per Length. Refers to the Cost per Km. of road
section.
 Cost per Area. Refers to the Unit Cost per square
meter, calculated based on the width of the main
carriageway, and excluding the width of the shoulders.
Carriageway
Lane Lane
Shoulder
Shoulder
Bicycle
Lane
Platform

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Concept 3: Minimum Data Requirements
Every single data collected –
to be a valid entry– should
include “all” the Mandatory
items to generate the
average and range unit
costs
⑤ UNIT COST
⑥ CURRENCY
CODE
④ COST
TYPE
⑩ WORK TYPE
① COUNTRY
NAME
RECORD IDENTIFIER
⑧ EXCHANGE
RATE US$
Estimate
Contract
Actual
② PROJECT OR
SOURCE NAME
AGENCY
ID
⑨ WORK
DESCRIPTION
Valid List
Classification
Free Form
Free Form
③ COST
SOURCE
Section
Program
($/km - $m2)
⑦ COST
DATE
COST DATA WORKS DATA
11 Number of Lanes

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Concept 4.
Alternative Classes of Input Data
 Minimum data and highly recommended data set
 Country specific classification
 Source of information details
 Cost, contract, contractor and construction
characteristics
 Road works characteristics (width, terrain,
climate, thickness, surface type, etc.)
 Road Works Cost Breakdown (bill of quantities,
labor/equipment/materials, foreign/local currency)
 Other Road Agency Costs

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Concept 4. Data Collection Form – Part I
Sections 1 through 5 - Cost and Work Description
Record
Country
State, Department or Province
User Classification 1
World Region:
Project or Source Name
Section
Report Type
Report Location
Cost Date Cost Type
Cost Source
Currency Code US$ Exchange Rate
Cost Financing Contract Type
BID Type Contractor Type
Construction Method Economic Cost Factor
Taxes (Y/N) Contingencies (Y/N)
Work Description
Work Type
Work Predominant Activity
Section 6 - Road Work Cost per Length
Base Cost (M$) Length (km)
Physical Contingencies (M$) Duration (months)
Price Contingencies (M$) Total Cost per Kilometer ($/km)
Total Cost (M$) Total Cost per Kilometer (2000 US$/km)
Section 7 - Road Work Cost per Area
Total Cost per Carriageway Area ($/m2)
Total Cost per Carriageway Area (2000 US$/m2)

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Concept 4. Data Collection Form – Part II
Section 8 - Road Work Characteristics
Pavement Width (m) Climate Type
Shoulder Width (mm) Pavement Type
Number of Lanes Surface Class
Resurfacing Layer Thickness (mm) Surface Type
Depth of Milling (mm) Surface Material
Surface Thickness (mm) Base Material
Base Thickness (mm) Patching or Crack Sealing Unit Cost ($/m2)
Subbase Thickness (mm) Patching or Crack Seal. Quantity (m2/km-year)
Structural Number Spot Regravelling or Regravell. Unit Cost ($/m3)
Terrain Type Spot Regravelling Quantity (m3/km-year)
Section 9 - Road Work Cost Details (% of Road Work Cost)
Mobilization (%)
Demolition and Site Clearance (%)
Earthworks (%)
Drainage,P Works,Culv.&Min. Bridges (%) Drainage and Protective Works(%)
Major Bridges and Structures (%) Culverts and Minor Bridges (%)
Accesses and Junctions (%)
Pavement Courses (%) Subbase (%)
Shoulder Works (%) Base (%)
Line Markings and Signs (%) Subbase and Base (%)
Environment (%) Surface (%)
Dayworks (%)
Other (%)
Contingencies (%)
Taxes (%)
Total (%)
Labor (%):
Materials (%):
Equipment (%):
Total (%):
Foreign Currency (%): Foreign Currency Code
Section 10 - Other Additional Road Agency Costs (% of Road Work Cost)
Land Acquisition (%): Design (%):
Resettlement (%): Supervision (%):
Land Acquisition & Resettlement (%):

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Concept 5.
Single Currency and Single Reference Date
 Costs are collected on any currency
 Every cost data should have a date associated
with it.
 For comparison purposes, all the data is first
converted into a single reference date (using the
CPI of the selected currency), and then
converted into a single currency (using the
exchange rate).
 The system presently uses year 2000 as a single
reference date, and US dollars for the single
currency.

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Product 2. System Components
 ROCKS Database. It is the main element of the
system and the primary tool to collect and input the
data. It also includes a detailed manual.
 ROCKS View Module. This module can be used to
filter, sort, view and print the information stored in the
ROCKS Database.
 ROCKS Statistics Module. It is used to filter, generate
statistical reports, and analyze the information stored
in the ROCKS Database.
 ROCKS Disbursements Module. It is a tool to
translate a series of actual current disbursement into
a single cost on a single base date.

WORLD BANK ROCKS
ROCKS - RO
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Components – Inputs and Outputs
ROCKS DATABASES
ICRA–RACA–IBRD–INDA–THAA–POLA–BGDA–ARMA–GHAA–UGAA
VIEW MODULE STATISTICS MODULE
DISBURSEMENTS
MODULE
DATA
COLLECTION
FORM
ROAD WORKS
CLASSIFICATIO
N
INPU
T
DAT
A
OUTPUT DATA – REPORTS
STATISTICS
AVERAGE AND
RANGE
UNIT COSTS

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ROCKS - RO
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Product 3. Development Network
SYSTEM TESTING - DATA COLLECTION – DATA USER – PARTNER DEVELOPER
EAP
Viet Nam
Thailand
Philippines
ECA
Armenia
Poland
AFR
Uganda
Ghana
SAR
India
Bangladesh
THE WORLD BANK TRANSPORT UNIT
System Design & Development
Data Collection & Data Consolidation
Road Agency Training
EXISTING ROCKS DEVELOPMENT NETWORK
COUNTRY AGENCY
Armenia Armenia Roads SSCC
Bangladesh RHD – Roads and Highways Department
Ghana GHA – Ghana Highway Authority
India CRRI – Central Road Research Institute and NHAI
Philippines DPWH – Department of Public Works & Highways
Poland GDDP – General Directorate of Public Roads
Thailand DOH – Department of Highways
Uganda RAFU – Road Agency Formation Unit
Vietnam Ministry of Transport – Planning & Investment Depart.

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Product 4. Database – WORLD – Data
Description
 Source: Mainly World Bank financed projects
ICRs – PADs – Works Contracts – Supervision
Reports – Feasibility Studies – Procurement &
Pavement Information Management Systems.
 More than 1,500 records from 65 countries.
 554 estimates 554 contracts 404 actuals
 433 from Programs 1079 from Sections
 Costs from 1984 – 2002 but mainly 1997 – 2002
Period Percentage
1984 1986 1987 1988 1989 1990
1 7 0 7 14 1
1991 1992 1993 1994 1995 1996
4 26 74 40 63 126
1997 1998 1999 2000 2001 2002
171 165 163 324 243 28
75%
23%
2%
Number of Records per Cost Date
84-90
91-95
96-02

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Product 5.
Preservation Works – Unit Costs per km
Work Type Predominant Work Activity Average Minimum Maximum Count
Routine Maintenance Routine Maintenance Unsealed 2L Highway 989 277 1,740 7
Routine Maintenance Bituminous 2L Highway 2,199 656 5,580 40
Grading Light Grading 2L Highway 110 51 205 12
Heavy Grading 2L Highway 522 323 876 6
Gravel Resurfacing Regravelling 2L Highway 15,344 1,997 65,038 130
Bituminous Pavement Fog Seal 2L Highway 8,946 2,805 15,783 18
Surface Treatment Slurry Seal or Cape Seal 2L Highway 10,732 4,452 27,520 33
Resurfacing Single Surface Treatment 2L Highway 18,937 5,295 38,607 38
Double Surface Treatment 2L Highway 27,502 10,684 45,277 55
Asphalt Mix Asphalt Overlay < 40 mm 2L Highway 37,352 12,878 82,320 26
Resurfacing Asphalt Overlay 40 to 59 mm 2L Highway 67,619 21,021 126,131 158
Strengthening Asphalt Overlay 60 to 79 mm 2L Highway 89,933 27,473 157,984 37
Asphalt Overlay 80 to 99 mm 2L Highway 137,445 38,583 403,694 108
Asphalt Overlay > 99 mm 2L Highway 145,853 73,444 273,516 56
Reconstruction Reconstruction Unsealed 2L Highway 36,068 10,046 93,207 24
Reconstruction Bituminous 2L Highway 233,426 20,165 685,105 412
Reconstruction Concrete 2L Highway 262,992 45,069 657,747 17
PRELIMINARY AVERAGE AND RANGE UNIT COSTS US$/km (Year 2000)
PRESERVATION WORKS

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Product 5.
Development Works – Unit Costs per km
Partial Partial Widening to Bituminous 2L 150,925 135,964 161,677 6
Widening
Partial Widening and Partial Widening to Bituminous 2L and Rec. 378,160 307,222 424,928 13
Reconstruction
Widening Widening Adding Bituminous 2L 486,930 290,776 670,195 22
Widening and Widening Adding Bituminous 1L and Rec. 410,257 262,532 564,575 9
Reconstruction Widening Adding Bituminous 2L and Rec. 1,077,419 705,502 1,417,778 21
Widening Adding Bituminous 4L and Rec. 1,866,207 1,568,359 2,096,415 8
Upgrading Upgrading Unsealed to Unsealed 2L Highway 52,176 12,592 93,205 14
Upgrading Unsealed to Bituminous 2L Highway 296,466 73,470 834,428 55
Upgrading Unsealed to Concrete 2L Highway 314,200 92,651 469,815 5
Upgrading Block to Bituminous 2L Highway 325,150 272,527 384,392 3
New 2L Highway New Bituminous 2L Highway 1,256,331 644,786 1,875,104 26
New Concrete 2L Highway 1,023,858 572,502 1,515,835 12
New 4L Highway New Bituminous 4L Highway 2,798,048 2,123,298 4,006,131 10
New Concrete 4L Highway 3,249,687 2,706,956 3,792,418 2
PRELIMINARY AVERAGE AND RANGE UNIT COSTS US$/km (Year 2000)
DEVELOPMENT WORKS

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Unit Costs per km 2L – equivalent
Frequency Histogram of Cost per km
Double Surface Treatment 2L Highway
0
1
2
3
4
5
6
7
8
9
1
0
,
6
8
4
1
3
,
3
4
5
1
6
,
0
0
6
1
8
,
6
6
7
2
1
,
3
2
8
2
3
,
9
8
9
2
6
,
6
5
0
2
9
,
3
1
1
3
1
,
9
7
2
3
4
,
6
3
3
3
7
,
2
9
4
3
9
,
9
5
5
4
2
,
6
1
6
4
5
,
2
7
7
US$/km (Year 2000)
Number
of
Observations

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Product 5.
Preservation Works – Unit Costs per M2
Gravel Resurfacing Regravelling 2.42 0.29 10.84 130
Bituminous Pavement Fog Seal 1.11 0.35 2.10 18
Surface Treatment Slurry Seal or Cape Seal 1.62 0.74 4.59 33
Resurfacing Single Surface Treatment 2.61 0.81 5.29 38
Double Surface Treatment 3.82 1.53 6.14 55
Asphalt Mix Asphalt Overlay < 40 mm 5.18 1.84 11.28 26
Resurfacing Asphalt Overlay 40 to 59 mm 9.81 3.00 19.16 156
Strengthening Asphalt Overlay 60 to 79 mm 12.74 3.92 21.06 37
Asphalt Overlay 80 to 99 mm 18.66 5.51 38.35 104
Asphalt Overlay > 99 mm 20.89 10.49 42.08 56
Reconstruction Reconstruction Unsealed 5.15 1.44 13.32 24
Reconstruction Bituminous 33.35 2.88 97.87 412
Reconstruction Concrete 38.11 6.93 93.96 17
PRESERVATION WORKS
PRELIMINARY AVERAGE AND RANGE UNIT COSTS US$/m2 (Year 2000)

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Sample Output 1.
Cost per Km for Selected Works in Thailand in Million U$/km (Year 2000)
and Cost Adjustment Factors by Terrain Type and Region
WORK ACTIVITY REGION
Slurry Seal or Cape Seal (Reseal) 0.011 0.011 0.011 0.011
Asphalt Overlay 40-59 mm (50 mm) 0.045 0.050 0.045 0.045
Asphalt Overlay 80-99 mm (80 mm) 0.068 0.077 0.068 0.068
Reconstruction Bitum. (50 mm AC) 0.070 0.092 0.071 0.070
TERRAIN TYPE Flat Rolling Mount. Flat Rolling Mount. Flat Rolling Mnt. Flat Rolling Mount.
Widening Adding Bitum. 2L (2L to 4L) 0.470 0.485 0.725 0.548 0.563 0.823 0.489 0.504 - 0.464 0.479 0.720
New Bituminous 2L Highway 0.337 0.351 0.567 0.387 0.401 0.634 0.352 0.366 - 0.332 0.347 0.563
New Bituminous 4L Expressway 2.584 2.406 3.685 2.762 2.539 3.862 2.620 2.443 - 2.575 2.398 3.677
REGION
TERRAIN TYPE Flat Rolling Mount. Flat Rolling Mount. Flat Rolling Mnt. Flat Rolling Mount.
SOUTHERN REGION
COST ADJUSTMENT FACTORS BY REGION & TERRAIN TYPE f(FLAT = 1.0)
NORTHERN REGION NORTHEASTERN REG. CENTRAL REGION SOUTHERN REGION
NORTHERN REGION NORTHEASTERN REG. CENTRAL REGION

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Sample Output 2. Unit Costs per m2 in US$ (Year 2000)
Selected Works for Bituminous Surface Class – Worldwide Data
2.61
3.82
5.18
9.81
12.74
18.66
0.81
1.53 1.84
3.00
3.92
5.51
4.59
5.29
6.14
11.28
19.16
21.06
38.35
20.89
1.11
1.62
10.49
0.74
0.35
42.08
2.10
0
5
10
15
20
25
30
35
40
45
Fog Seal Slurry Seal
or Cape
Seal
Single
Surface
Treatment
Double
Surface
Treatment
Asphalt
Overlay <
40 mm
Asphalt
Overlay 40
to 59 mm
Asphalt
Overlay 60
to 79 mm
Asphalt
Overlay 80
to 99 mm
Asphalt
Overlay >
99 mm
Pavement Preventive Treatment Surface Treatment Resurfacing Asphalt Mix Resurfacing Strengthening
Maximum
Average
Minimum

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Sample Output 3.
Cost Breakdown in Typical Bill of Quantities and Other Agency Costs (%)
India Estimates – Widening Adding 2L and Reconstruction
Road Work Cost Details (% of Road Work Cost)
Mobilization (%): 0.5%
Demolition and Site Clearance (%): 0.5%
Earthworks (%): 11.9%
Drainage,P Works,Culv.&Min. Bridges (%): 16.8%
Major Bridges and Structures (%): 5.7%
Pavement Courses (%): 49.5%
Line Markings and Signs (%): 5.8%
Contingencies (%): 9.2%
Total (%): 100.0%
Land Acquisition (%): 5.1%
Resettlement (%): 3.0%
Supervision (%): 6.7%
Other Road Agency Costs (% of Road Work Cost)

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0
5
10
15
20
25
30
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0
Works costs per km: Actual Cost / Appraisal Estimate
Probability < 1.0 = 38 %
Probability > 1.0 = 62 %
Sample Output 4.
Comparison between Actual Cost at completion and Estimated Costs at
Appraisal for World Bank financed Projects – All Countries

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Sample Output 5. Unit Costs per km in Thousands US$ (Year 2000)
Selected Development Works – Worldwide Data
378
487
410
1,077
1,866
296 314
1,024
3,250
263
706
1,568
73 93
645
573
2,123
2,707
670
565
1,418
2,096
834
470
1,875
1,516
4,006
3,792
2,798
1,256
151 291
307
136
425
162
0
500
1,000
1,500
2,000
2,500
3,000
3,500
4,000
4,500
Only
and
Reconstruction
Adding
Bitumin.
2L
Adding
Bitumin.
1L
Adding
Bitumin.
2L
Adding
Bitumin.
4L
Unsealed
to
Bituminous
Unsealed
to
Concrete
Bituminous
Concrete
Bituminous
Concrete
Partial Widening to
Bituminous 2L
Widening Only Widening and Reconstruction Upgrading 2L Highway New 2L Highway New 4L Highway
Thousands
Maximum
Average
Minimum

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Dissemination Package
Version 2.01 (09/09/02)
Microsoft Excel Documents (xls)
 ROCKS – Database – WORLD (Version 2.01)
 ROCKS – Database – EMPTY (Version 2.01)
 ROCKS – Module - View (Version 2.01)
 ROCKS – Module - Statistics (Version 2.01)
 ROCKS – Module - Disbursements (Version 2.01)
 ROCKS – Documentation – Data Collection Form (Version 2.01)
 ROCKS – Documentation – Road Works Classification (Version 2.01)
 ROCKS – Documentation – Annex 1 - Set of Statistics Report (Version 2.01)
Microsoft Word Documents (doc)
 ROCKS – Documentation – Executive Summary (Version 2.01)
 ROCKS – Documentation – User’s Manual (Version 2.01)
 ROCKS – Documentation – Read Me First (Version 2.01)
Microsoft Power Point Document (ppt)
 ROCKS – Documentation – Power Point Presentation (Version 2.01)

WORLD BANK ROCKS
ROCKS - RO
ROad C
Costs K
Knowledge S
System
32
For more information contact:
Rodrigo Archondo-Callao
Fax: 1-202-522-3223
E-mail: rarchondocallao@worldbank.org
The World Bank provides no warranty in terms of correctness, accuracy, currentness
reliability or otherwise regarding the database. The user relies on the products
of the software and the results solely at his or her own risk. In no event will the
World Bank or anyone else who has been involved in the creation of this product
be liable for its application or misapplication in the field. The World Bank reserves the
right to make revisions and changes from time to time without obligation to notify any
person of such revisions and changes.
Disclaimer
The World Bank
Transport & Urban Development Department
1818 H St. NW
Washington, DC 20433 - USA
Alberto Nogales
Fax: 1-202-522-3223
E-mail: anogales@worldbank.org

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