Summary 
  
The use of orthophotomaps for location and design 
of highways as well as for operation and maintenance 
is explained. 
Directions and recommendations for the production 
of orthophotomaps are given with regard to: 
scales of aerial negatives and maps, focal 
distances of aerial cameras and overlap of 
photographs, location of stereo-models in 
relation to map sheets, assembly of road 
design, property map, contour lines and the 
photomap, quality requirements and photo- 
graphic tolerance, assembly and reproduc- 
tion of orthophotomaps. 
Samples of typical orthophotomaps to illustrate 
these special fields of application to highway 
work are enclosed.