TABLE 1 STATUS OF NATIONAL ROADS: ODENDAAL COMMISSION
TABLE 2 NAMIBIA: ROAD NETWORK BY ROAD CATEGORIES (km)
TABLE 3 GEOGRAPHICAL DISTRIBUTION OF VARIOUS ROAD CLASSES
TABLE 4 NAMIBIA: THE ROADS SYSTEM ON A DISTRICT BASIS, 1986
TABLE 5 VEHICLE NUMBERS IN NAMIBIA ACCORDING TO THEIR TYPES
TABLE 6 NAMIBIA: ROADS ACCORDING TO THEIR PAVEMENT TYPES
TABLE 7 DEVELOPMENT OF PAVEMENTS FOR PAVED ROADS: 1957-1985
TABLE 8 RUN-OFF COEFFICIENTS: RATIONAL FORMULA: D.o.T.
TABLE 9 MEAN ANNUAL PRECIPITATION FOR 35 RAINFALL STATIONS
TABLE 10 ROAD BUILDING MATERIALS IN NAMIBIA: ROCKS AND STONES
TABLE 11 ROAD BUILDING MATERIALS IN NAMIBIA: SAND
TABLE 12 LOCATION AND PROPERTIES OF VAALIAN AND MOKOLIAN ROCKS
TABLE 13 PHYSICAL PROPERTIES OF QUARRIED DOLOMITE: OTAVI GROUP
TABLE 14 ROAD-BUILDING PROPERTIES OF WEATHERED MULDEN PHYLLITE
TABLE 15 ROAD BUILDING PROPERTIES OF WEATHERED SALEM GRANITE
TABLE 16 LOCATION AND PROPERTIES: NAMIBIAN AND CAMBRIAN ROCKS
TABLE 17 LOCATION AND PROPERTIES OF KAROO ROCKS
TABLE 18 LOCATION/PROPERTIES OF TERTIARY AND QUATERNARY ROCKS
TABLE 19 TYPICAL CHEMICAL COMPOSITIONS OF PEDOCRETES
TABLE 20 RECOGNITION OF PROBLEM PEDOCRETES
TABLE 21 SURVEY DATA FOR 'VOC' MAIN STUDIES
TABLE 22 HDM3 PREDICTION OF 'VOC' FOR A MEDIUM TRUCK: PAVED ROAD
TABLE 23 QUANTIFIABLE ELEMENTS OF ROAD USER COSTS
TABLE 24 THE EFFECT OF ROAD ROUGHNESS ON FUEL CONSUMPTION
TABLE 25 VEHICLE OPERATING COSTS FOR A PASSENGER BUS
TABLE 26 VEHICLE OPERATING COSTS FOR A PASSENGER CAR
TABLE 27 VEHICLE OPERATING COSTS FOR A MEDIUM TRUCK
TABLE 28 SERIOUSNESS RATING FOR CRACKING
TABLE 29 SERIOUSNESS RATING: SURFACING AGGREGATE AND BLEEDING
TABLE 30 SERIOUSNESS RATING FOR CRACKING: REVISED METHOD
TABLE 31 SERIOUSNESS RATING: SURFACING AGGREGATE AND BLEEDING
TABLE 32 PREDICTED SAVINGS IN 'VOC' FOR PAVED ROADS
TABLE 33 MAINTENANCE PARAMETERS OF SOME UNPAVED ROADS
TABLE 34 SUBJECTIVE RIDING QUALITY AS FUNCTION OF ROUGHNESS
TABLE 35 CONTRIBUTION FACTORS TO POOR RIDING QUALITY
TABLE 36 PERFORMANCE CRITERIA FOR UNPAVED ROADS
TABLE 37 UNPAVED ROAD SECTIONS FOR NAMIBIAN 'MDS' SYSTEM
TABLE 38 RIDING QUALITIES STATISTICS OF SAMPLE SOURCES
TABLE 39 MATERIAL PROPERTIES STATISTICS
TABLE 40 MATERIALS SPECIFICATION FOR GRAVEL WEARING COURSES
TABLE 41 SPOORBAAN EXPERIMENTAL SECTION: BASIC PARAMETERS
TABLE 42 SPOORBAAN EXPERIMENTAL SECTION: OSHANA REGION
TABLE 43 DESIGN PARAMETERS: SECTION 2: SPOORBAAN EXPERIMENT
TABLE 44 LOWER COST ACTIVITIES: LABOUR AGAINST EQUIPMENT

FIGURE 1 GRADINGS OF TYPICAL NAMIB AND KALAHARI SANDS
FIGURE 2 VEHICLE OPERATING COSTS: FUEL: SURFACED PAVEMENTS
FIGURE 3 VEHICLE OPERATING COSTS: FUEL: UNPAVED ROADS
FIGURE 4 COMPARISON OF 'VOC' FOR RSA/NAMIBIAN AND HDM 3
FIGURE 5 JUDGEMENT OF PAVEMENT DEFECTS
FIGURE 6 APPROPRIATENESS OF A RESEAL
FIGURE 7 REVISED RESEAL ALGORITHM
FIGURE 8 NAMIBIAN MAINTENANCE DESIGN SYSTEM
FIGURE 9 ACCEPTABILITY CRITERIA AS FUNCTION OF ROAD ROUGHNESS
FIGURE 10 INTERACTION OF PAVEMENT DETERIORATION MODES
FIGURE 11 PREDICTION: ROUGHNESS CHANGE AS FUNCTION OF 'ADT'
FIGURE 12 PREDICTION: GRAVEL LOSS AS FUNCTION OF 'ADT'
FIGURE 13 PREDICTION: RUT DEPTH AS FUNCTION OF 'ADT'
FIGURE 14 OPTIMAL POINT OF GRADING OF UNPAVED ROADS
FIGURE 15 OPTIMAL POINT OF SURFACING UNPAVED ROADS
FIGURE 16 RIDING QUALITY RESULTS: SPOORBAAN TRIAL: D.R.3613
FIGURE 17 APPROPRIATENESS OF LABOUR-BASED ACTIVITIES 206