Namibia is (1987) served by 41.572 km of trunk, main and district roads of which 4.402 km are paved roads (14,5 km to freeway standard). These roads are the sole responsibility regarding construction and maintenance of the Department of Transport (This statistic is valid for 30 September 1986 as derived from the relevant databank in the Computer System of the Department of Transport. The lengths of all proclaimed roads for different traffic count classes and for the various districts are stored in a computer file 'SUMRY3' and the total lengths of all paved roads in 10 m sections in a file 'RSDTOT'. 185 km of paved roads were September 1986 under construction: main road 65 Outjo - Khorixas: approx. 132 km and the first section of trunk road 8/4: Rundu-Bagani: 53 km. The road lengths include roads in the enclave of Walvis Bay with a total length of main roads of 86,2 km and paved main roads of 46,55 km.). It must be stated that these 4.402 km paved roads and a further approx. 185 km roads which are under construction (September 1986) to paving standards are carrying approximately 70% of the total rural traffic generated in Namibia (See: total vehicle-km/day travelled for 1990/91: table 5: nota 2). A further approximate 22.058 km of farm roads are proclaimed in terms of Ordinance 17 of 1972 but are not the responsibility of the state. To sum up, a total of 63.630,00 km are proclaimed trunk, main, district and farm roads.

In the "modern" sector of Namibia the road network seems to be more than adequate. The " Annual Average Daily Traffic" ( AADT) volumes are, except in some areas of high industrial, commuter and weekend/ holiday traffic, surprisingly low. There are very few roads carrying more than an AADT of 500 vpd (See: total vehicle-km/day travelled for 1990/91: table 5: nota 2). Many high standard roads are quite underutilised ensuring slow wear and tear with resulting relatively low maintenance costs. See Appendix Map 2 with approximate traffic loadings at the end of the thesis (Appendix 4).

Vehicle-wise the occupation of the road network is very low and varies between 15% on arterial roads and 1% on secondary roads of their theoretical traffic bearing capacity. It can be accepted that a rural two-lane paved road can, dependent on local conditions, carry between 9.000 and 14.000 vehicle units per day in both directions. During a traffic count together with a road freight survey during August 1984, the highest traffic loadings have been encountered on the three trunk roads around Windhoek, viz. trunk road 1/5 Windhoek-Rehoboth, trunk road 1/6 Windhoek-Okahandja and on main road 92 between Ondangwa and Oshakati in Owamboland, where a traffic count of 1.600 vehicle units per day has been established. The traffic on all other roads revealed less than 1.000 vehicle units per day which resulted in above indicated percentage values. On 1 April 1986 the total number of vehicles in Namibia has been established with 120.170 vehicles including 9.255 government, army and police vehicles (table 5) [6] [7] [8] [9] (The statistics include the Walvis Bay's numbers of 7.200 vehicles and a rough percentage-break-down of different vehicle classes were obtained from the City Engineer Walvis Bay.)

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TABLE 5  VEHCLE NUMBERS IN NAMIBIA ACCORDING TO THEIR TYPES

|==================================================================|
| DISTRICTS     | Light Veh.<3t | Heavy Veh. | Other Types | TOTAL |
|               | and cycles    | 3t->16t    | Trailers etc|       |
|---------------|---------------|------------|-------------|-------|
| Aranos        | 634           | 70         | 152         |   856 |
| Bethanien     | 520           | 18         | 68          |   606 |
| Gobabis       | 3.193         | 413        | 556         | 4.162 |
| Grootfontein  | 2.219         | 228        | 539         | 2.986 |
| Karasburg     | 1.287         | 126        | 328         | 1.741 |
| Karibib       |   543         | 41         | 54          |   638 |
| Katima Mulilo |   842         | 38         | 92          |   972 |
| Keetmanshoop  | 3.892         | 175        | 426         | 4.493 |
| Khorixas      |   714         | 46         | 61          |   821 |
| Lüderitz      |   807         | 71         | 88          |   966 |
| Maltahöhe     |   675         | 66         | 97          |   838 |
| Mariental     | 2.444         | 105        | 608         | 3.157 |
| Okahandja     | 2.849         | 233        | 380         | 3.462 |
| Okakarara     |   581         | 62         | 16          |   659 |
| Omaruru       |   861         | 46         | 125         | 1.032 |
| Opuwa         |   475         | 34         | 17          |   526 |
| Oranjemund    | 2.470         | 221        | 436         | 3.127 |
| Oshakati      | 5.284         | 147        | 478         | 5.909 |
| Otavi         |   940         | 133        | 232         | 1.305 |
| Otjinene      |   181         | 20         | 5           |   206 |
| Otjiwarongo   | 2.872         | 219        | 730         | 3.821 |
| Outjo         | 1.320         | 114        | 418         | 1.852 |
| Rehoboth      | 1.573         | 53         | 87          | 1.713 |
| Rundu         | 103           | 68         | 21          |   192 |
| Swakopmund    | 4.894         | 295        | 779         | 5.968 |
| Tsumeb        | 3.249         | 200        | 563         | 4.012 |
| Usakos        | 535           | 26         | 104         |   665 |
| Walvis Bay    | 5.040         | 1.440      | 720         | 7.200 |
| Windhoek      |39.733         | 2.102      | 5.213       | 47.048|
| Government    | 3.414         | 2.699      | 3.142       | 9.255 |
|---------------|---------------|------------|-------------|-------|
| TOTAL         |94.126         | 9.509      |16.535       |120.170|
|==================================================================|

NOTA 1: The class "light vehicles <3t" include motor cycles; "heavy vehicles 3 -> 16t" include in total 1.780 very heavy vehicles with more than 16 t mass, governmental bodies own 1.634 vehicles. "Other types" include trailers, caravans and other vehicles (01.04.1986).

NOTA 2: Total Vehicle-km/day travelled for 1990/91:All proclaimed rural roads: 2.871.060 (vehicle-km/day)

Paved roads (AADT=1.630; 340 km): 572.130 (vehicle-km/day)
Paved roads (AADT= 660; 1.295 km): 883.080 (vehicle-km/day)
Paved roads (AADT= 200; 2.767 km): 571.400 (vehicle-km/day)
Gravel roads (AADT= 30; 23.733 km): 756.150 (vehicle-km/day)
Earth roads (AADT= 10; 13.437 km): 88.300 (vehicle-km/day)
Urban roads: 3.097.674 (vehicle-km/day)

Total E80-km/day travelled for 1990/91:

All proclaimed and urban roads: 1.421.695 (E80-km/day)
Paved rural roads: 939.585 (E80-km/day)
Rural unpaved and urban roads: 482.110 (E80-km/day)

SOURCE: Ministry of Works, Transport and Communication, 1991

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