00142720

Component

A model is described that can be used to aid investment decisions regarding roads in developing countries. It calculates the construction cost of a road and predicts its condition as vehicles traverse it. Having predicted the condition of the road, the model estimates road maintenance and vehicle operating costs for each year. All these costs are then discounted back to the base year and summed over the life of the road to obtain the total cost. All estimates are made in terms of physical quantities, and costs are obtained by applying unit rates to these. The model is flexible and can be used to study the economics of varying stage construction alternatives such as upgrading an earth road to a gravel or paved road at any time during the design life. A case study of the application of the model to a paved road in western Kenya is described. Good agreement is obtained between actual and predicted construction costs. With a first year average daily traffic of about 400, vehicle operating costs over 10 years are two and a half times the cost of initial construction. Road maintenance costs are less than 1 percent of the total transport cost.

Proceedings of a work shop held June 16-19, 1975, in Boise, Idaho by the Transportation Research Board.

01411726

pp 336-354

1975

Transportation Research Board Special Report

Print

Figures (8) ; References (10) ; Tables (7)

Construction; Costs; Developing countries; Investments; Maintenance management; Mathematical models; Motor vehicles; Operating costs; Transportation

Construction costs; Maintenance costs; Transportation models

Construction; Economics; Society; Transportation (General)

TRIS, TRB, ATRI

Feb 1 1977 12:00AM

• A METHOD OF FIELD DESIGN APPLIED TO FOREST ROADS
• A NEW APPROACH TO HIGHWAY DRAINAGE DESIGN
• A PAVEMENT MANAGEMENT CONCEPT FOR LOW-VOLUME ROADS
• A PROPOSED APPROACH TO SETTING ROAD MAINTENANCE LEVELS FOR FOREST ROADS
• AN INVESTIGATION INTO ROAD DETERIORATION IN KENYA
• ANALYTICAL PLANNING TECHNIQUES FOR NATIONAL FOREST ROADS
• CRITERIA FOR SEALING OR OTHER SURFACE MAINTENANCE ON BITUMINOUS ROADS
• DESIGN, CONSTRUCTION, AND PERFORMANCE OF A FOREST SERVICE ASPHALT-STABILIZED SAND TEST ROAD
• DILEMMAS IN THE ADMINISTRATION, PLANNING, DESIGN, CONSTRUCTION, AND MAINTENANCE OF LOW-VOLUME ROADS
• Economical Structures for Low-Volume Roads
• EXPERIENCE WITH THE BENKELMAN BEAM ON CANADIAN FOREST ROADS
• FOREST ROAD CLASSIFICATION IN EASTERN CANADA
• HIGHWAY DESIGN STANDARDS STUDY
• IMPACTS OF HIGH-INTENSITY RAINSTORMS ON LOW-VOLUME ROADS AND ADJACENT LAND
• INTRODUCTION TO SPECIAL REPORT LOW VOLUME ROADS
• INVESTIGATION OF PRECAST AND PRESTRESSED CONCRETE BRIDGE FOR LOW-VOLUME ROADS
• INVESTIGATION OF VEHICLE OPERATION COSTS IN KENYA
• LOAD-SUPPORTING CAPABILITY OF LOW-VOLUME ROADS
• LOW-VOLUME ROAD PAVEMENTS
• MANAGING A 200,000-MILE ROAD SYSTEM: OPPORTUNITY AND CHALLENGE
• METHODOLOGY FOR ESTABLISHING THE ECONOMIC VIABILITY OF LOW- VOLUME ROADS
• METHODS FOR ESTIMATING TRAFFIC VOLUMES AND COMPOSITION ON NATIONAL FOREST ROADS
• MILITARY INTEREST IN LOW-VOLUME ROADS
• MINUTEMAN ACCESS ROADS
• MODERN COUNTY ROAD SYSTEMS
• NEW DESIGN METHOD FOR SECONDARY AND SUBDIVISION ROADS IN VIRGINIA BASED ON THICKNESS EQUIVALENCY VALUES
• OPTIMAL POLICIES FOR TRANSPORTING ROCK AGGREGATE TO LOW- VOLUME ROADS
• PAVEMENT DESIGN ON LATERITIC CLAYS: IFE-BENIN CITY NIGERIA, TRUNK ROAD REHABILITATION PROJECT
• RETAINING WALL PRACTICE AND SELECTION FOR LOW-VOLUME FOREST ROADS
• ROADS IN DEVELOPING COUNTRIES
• SIMPLIFIED SLOPE DESIGN FOR LOW-STANDARD ROADS IN MOUNTAINOUS AREAS
• SOIL-LIME MIXTURES FOR CONSTRUCTION OF FINE-GRAINED SOIL PAVEMENTS
• STATE OF THE ART OF EMULSION PAVEMENTS IN REGION G OF THE U.S. FOREST SERVICE
• TECHNIQUES FOR MEASURING VEHICLE OPERATING COST AND ROAD DETERIORATION PARAMETERS IN DEVELOPING COUNTRIES
• THE FOREST SERVICE'S COMPUTER-AIDED ROAD DESIGN SYSTEM
• TIMBER CRIB RETAINING STRUCTURES
• TOPOMETRICS: A SYSTEM FOR EVALUATING ROUTE ALTERNATIVES
• USE OF ASPHALT RUBBER ON LOW-COST, LOW-VOLUME STREETS