
2-7
The way to do this is simple:
Have the people who do the counts fill out a simple worksheet
that has the location, date, time and type of count, along with any
other information you think is important (a sketch of the location
is usually a good idea). This worksheet is brought back to the of-
fice and used as a reference when the data is transferred to the
computer. The site code that was entered into the TDC Ultra in the
field is shown on the computer screen with the data. The computer
operator compares the site code on the screen to the site codes on
the worksheets to find the appropriate location information. It is a
simple system that has worked well for many different agencies. It
avoids the occasional problem of trying to remember exactly where
a particular count was done, especially if the person who did the
count is not available for one reason or another.
Once you have entered the site code, you will be taken to a new
screen that will vary depending on the type of study you are do-
ing. Refer to chapters 3 through 12 for more information on your
specific study.
Continue
It is often necessary to do a study at the same location at different times
of the same day. For example, you might do a study in the morning and
then return later in the day to collect additional data. You can choose
NEW and just do two separate counts and treat them separately, or (if it
is an available option) you can choose to CONTINUE the first study.
The Continue option is not always available as an option, and as a result
is not always shown on the display. The TDC Ultra checks the study in
memory to determine if it is one that you can continue.
The rules for being able to continue a study are as follows:
1. You can only continue a Standard Turning Movement, Roundabout
or Classification study. The other studies require uninterrupted
data collection.
2. You cannot Continue a study unless it is on the same day as the
previous study. All studies with the TDC Ultra are confined to a
single day.
Chapter 2 — Basic Operation of the TDC Ultra
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