Post-field interpretation 
= analyzer 12 days Á 250 3000 
4, Land use pattern map 
1:10 000 
= draftsman 10 days & 120 1200 
De Expenses 
= data processing 1500 
= reproduction 1000 2500 
Grand total 16200 
Survey costs/ku® US$ 138,5. 
Traffico survey 
Aerial photography 
The aerial photography for the survey was made with a 
Hasselblad 500 EL/C (£=80 mm, frame 57x57 mm). The camera 
platform was a Cessna 172 aeroplane, from which the right 
door was removed in order to get space for the camera mount. 
Six photo flights of the survey area were taken according to 
the schedule shown in figure 4. No special equipment was 
used in the navigation, but the navigator observed the 
flight path just visually through the removed door, The 
camera was provided with an automatic adjustable timer. 
Totally 770 exposures were made from two altitudes, 600 m 
and 1200 m, Kodak Tri-X film was used, 
Photointerpretation and field checks 
The photointerpretation was made by a traffic technician 
using a pocket stereoscope directly from the photo negatives. 
The number of images interpreted was appr. 600.