1. HDM-4 Inputs and Options

2. Speed Flow Type Speed (km/hr) S1 S2 S3 Sult Flow veh/hr Qo Qnom Qult
HDM-4 Inputs and Options

3. Number of Hours in the Year
Traffic Flow Pattern
Flow Periods
Flow
Peak
Next to Peak
Medium flow
Next to Low
Overnight
Number of Hours in the Year 3
HDM-4 Inputs and Options

4. Rise Plus Fall & Horizontal Curvature
Vertical Profile
Rise Plus Fall = (R1+R2+R3+F1+F2) / Length (meters/km)
Horizontal Profile
Horizontal Curvature = (C1+C2+C3+C4) / Length (degrees/km) 4

5. Analysis by Sections or Project
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. 5

6. Analysis by Sections Example
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. 6

7. Analysis by Project Example 1
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. 7

8. Analysis by Project Example 2
Analysis involving new sections and diverted traffic can only be performed using the Analysis by Project method. 8

9. Project, Programs & Strategies9

10. Multi-year Forward Programme Evaluation
IRI
Budget Period
Deferred investment
Investment now
Benefits from Investment
Years
Budget period: for example 1, 2 or 3 years 10

11. HDM-4 Version 2.0 Case Studies
HDM-4 Case Studies
Included with HDM-4
Documented on Volume 2: Application Guide C:\Program Files\HDM-4\Case Studies\Eng
World Bank Case Studies
Provided by the World Bank C:\HDM-4 Version 2.0 WB Case Studies 1.0
Windows Folders Containing HDM-4 Workspace 11

12. OBJECTS.DAT OBJECTS.IDX HDM-4 Workspace
Contains the configuration and inputs of an HDM-4 study
Can be copied from one computer to another
Composed of two files:
OBJECTS.DAT
OBJECTS.IDX 12

13. Copy the HDM-4 workspace files into any folder on your computer
To Review an HDM-4 Study
Obtain the HDM-4 workspace (OBJECTS.DAT and OBJECTS.IDX files) 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 13

14. HDM-4 Version 2.0 Structure
Input Data
Application Options Data
Configuration Data 14

15. HDM-4 Folders HDM-4 Folders
- HDM-4 folders resemble Windows Explorer folders, but these are not actual Windows folders, they are components of the HDM-4 Workspace.
- An HDM-4 Workspace is a Database that contains all input, application options and configuration data for a given study. 15

16. HDM-4 Workspace Windows folder where HDM-4 Workspace is located
- There could be many HDM-4 Workspaces on a hard disk, which are located on different Windows folders.
- An HDM-4 Workspace Database is composed of the following files: OBJECTS.DAT and OBJECTS.IDX, which can be copied from one Windows folder to another. 16

17. HDM-4 Run Data Directory on Setup Run
- 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. 17

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. 18

19. Export and Import Options
Import or Export to Access Files
You can export or import each item of information to or from an Access file.
Access files are used to connect HDM-4 with a Pavement Management System or Excel. 19

20. Export and Import File Formats
Road Network Export File Format.pdf Vehicle Fleet Export File Format.pdf located on C:\Program Files\HDM-4 Version 2.0\Documentation\Eng 20

21. Road Network Import Sample File21