Abstract
All of the current methods have these main more defects. They are not precise and requires much time and money.
The photographic methods which have been used hither to requires large quantities of data, but these methods are extremely difficult to assemble and analyze.
The continuous strip photography method is expected to provide us with the system of abtaining of both the data basic speed and volume simultaneously and of gathering them for an entire survey-area.
The next four methods of continuous strip photography were applied to the Japanese road in making this report.
(1) The influence of alignment upon L.
L: Distance vehicle has moved in the airbase.
(2) Relation between vehicle speed and spacing in the slope distance.
(3) The influence of the height of the road upon vehicle speed and spacing.
(4) Additional errors which occur in the tilt flight.
In making this survey, the national road No. 134 between Fujisawa and Shonanoohashi, which is 5 km long, was chosen.
The aerial photograph was taken at 10 : 50 a.m. on August 5, 1960.
