The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part B3b. Beijing 2008 
579 
Figure 4. Structure of the experiment 
* 
• _ • • •• a. 
xTjììpà 
. -Î-. 
-T • . 
• • • V • • 
&. . • 
..jci 
•V® 
* 
*w* 
Vv** 
• . 
w* • 
.&• . 
Figure 5. Distribution of FCD at road intersections