In a method for traffic monitoring, data related to a traffic situation is
measured. A picture of a traffic scene related to the traffic situation is
generated on a photographic film. The data is recorded on the photographic
film by converting the data to a first set of binary energizing signals
which is energizing recording arrangements, so as to generate a numeric or
alphanumeric representation of the data on the film in a first recording
field thereof. The data is converted to a second set of binary energizing
signals which energizes a recording arrangement, so as to generate a
neither numeric nor alphanumeric pattern on the film in a second recording
field.