HDM-4 Inputs and Options

2

Speed (km/hr)

S1

S2

S3

Sult

Qo Qnom QultFlowveh/hr

Speed Flow Type

3

PeakNext to Peak

Flow Periods

Medium flowNext to LowOvernight

Flow

Number of Hours in the Year

Traffic Flow Pattern

4

Vertical Profile

Horizontal Profile

Rise Plus Fall = (R1+R2+R3+F1+F2) / Length(meters/km)

Horizontal Curvature = (C1+C2+C3+C4) / Length(degrees/km)

Rise Plus Fall & Horizontal Curvature

5

• Analysis by Section: Section alternatives are defined for each section. The analysis determines the optimum alternative for each section. NPV is calculated for each section alternative. Analysis by Sections supports neither new sections nor diverted traffic.

• Analysis by Project: A project is composed of many sections. Project alternatives are defined indicating a maintenance/improvement standard per section. NPV is calculated for each project alternative (i.e. for the group of sections). The analysis determines the optimum alternative for the sections as a group. Analysis by Project supports the analysis of new sections and diverted traffic.

Analysis by Sections or Project

6

Each section is evaluated individually and can have any number of alternatives. HDM-4 produces a NPV for each section alternative that is used to find the optimal alternative per section.

Road Definition of Section AlternativesSections 1 (base) 2 3 4 5Section A Routine ResealingSection B Routine Resealing OverlaySection C Routine Overlay Reconstruction WideningSection D Routine Resealing Overlay Widening RealignmentSection E Grading Regravelling Paving

Road Section Alternatives ResultsSections 1 2 3 4 5Section A 0 NPV A2

Section B 0 NPV B2 NPV B3

Section C 0 NPV C2 NPV C3 NPV C4

Section D 0 NPV D2 NPV D3 NPV D4 NPV D5

Section E 0 NPV E2 NPV E3

Analysis by Sections Example

7

Analyses road sections together as a package by considering project alternatives as the unit for performing economic analysis. HDM-4 produces a NPV for each project alternative.

Road Definition of Project AlternativesSections 1 (base) 2 3 4Section A Routine Resealing Overlay ReconstructionSection B Routine Resealing Overlay ReconstructionSection C Routine Overlay Reconstruction WideningSection D Routine Overlay Widening RealignmentSection E Grading Regravelling Paving Widening

Project Alternatives Results1 2 3 4

Project 0 NPV 2 NPV 3 NPV 4

Analysis by Project Example 1

8

Analysis involving new sections and diverted traffic can only beperformed using the Analysis by Project method.

Road Definition of Project AlternativesSections 1 2 3Section A Routine Resealing ResealingSection B Routine Resealing ResealingSection C Routine Resealing ResealingSection D Routine Resealing ResealingNew Section Bypass X Bypass Y

Project Alternatives Results1 2 3

Project 0 NPV 2 NPV 3

Analysis by Project Example 2

9

EvaluatesMany Budget Use CreateRoads Users Generates Type of Constraints Existing New

HDM-4 or Road Specify Unconstrained Economic Network Road NetworkOption Classes Standards Program Analysis Optimization Network MatrixProjects Yes - by Section No - Life-cycle None Yes No

- by ProjectProgrammes Yes - by Section Yes - Life-cycle - Maximize NPV Yes No

- Multi-year Forward

ProgrammeStrategies Yes - by Section Yes - Life-cycle - Maximize NPV Yes Yes

- Maximize dIRI- Minimize costs

for target IRI

Project, Programs & Strategies

10

IRIBudget Period

Deferred investment

Investment now Benefits from Investment

Years

Budget period: for example 1, 2 or 3 years

Multi-year Forward Programme Evaluation

11

• HDM-4 Case StudiesIncluded with HDM-4Documented on Volume 2:Application Guide

C:\Program Files\HDM-4\Case Studies\Eng

• World Bank Case StudiesProvided by the World Bank

C:\HDM-4 Version 2.0 WB Case Studies 1.0

Windows FoldersContaining HDM-4

Workspace

HDM-4 Version 2.0 Case Studies

12

• Contains the configuration and inputs of an HDM-4 study

• Can be copied from one computer to another

• Composed of two files:OBJECTS.DATOBJECTS.IDX

HDM-4 Workspace

13

• Obtain the HDM-4 workspace (OBJECTS.DAT and OBJECTS.IDXfiles) created for the study

• Copy the HDM-4 workspace files into any folder on your computer

• Run HDM-4 and open the workspace, using the Open Workspace option and then locating the folder in which you have copied the workspace files

• Open the HDM-4 study

To Review an HDM-4 Study

14

InputData

Application OptionsData

ConfigurationData

HDM-4 Version 2.0 Structure

15

HDM-4 Folders

- HDM-4 folders resemble Windows Explorer folders, butthese are not actual Windows folders, they are

components of the HDM-4 Workspace.

- An HDM-4 Workspace is a Database that contains allinput, application options and configuration data

for a given study.

HDM-4 Folders

16

Windows folder where HDM-4 Workspace is located

- There could be many HDM-4 Workspaces on a harddisk, which are located on different Windows folders.

- An HDM-4 Workspace Database is composed of thefollowing files: OBJECTS.DAT and OBJECTS.IDX, which

can be copied from one Windows folder to another.

HDM-4 Workspace

17

- The Run Data Export Directory is the Windows folder that will store all the output files created by HDM-4 for an HDM-4 run.

HDM-4 Run Data Directory

HDM-4 Run Data Directory on Setup Run

18

HDM-4 Output File

• HDM-4 stores all the output results of an HDM-4 run on a single Access file named “RunData.mdb” located at the Run Data Export Directory.

• Users can explore the output results of an HDM-4 Run by importing the output data stored on the RunData.mdb file into Excel or a Pavement Management System.

19

You can export orimport each item of

information to or froman Access file.

Access files are used toconnect HDM-4 with a

Pavement ManagementSystem or Excel.

Import or Export to Access Files

Export and Import Options

20

Road Network Export File Format.pdfVehicle Fleet Export File Format.pdf

located on C:\Program Files\HDM-4 Version 2.0\Documentation\Eng

Export and Import File Formats

21

Road Network Import Sample File