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TDC Ultra User’s Manual

3-4

Deciding on how the TDC Ultra will be oriented during the study depends

on where you will actually be located while doing the count. When the data

from the unit is downloaded to our software, the program assumes that the

1 through 4 keys were for the from north (southbound) approach, and the

rest of the keys are assigned accordingly. The TDC Ultra’s front panel has

a symbol with compass points showing north, south, east and west. This

symbol is included to suggest that you align the counter so that buttons 1

though 4 faces north while you are doing the count. It is not necessary to

always conform to this practice. Sometimes it is more convenient for you

to face another direction when you do the count, especially if you want to

be able to read the display.

The analysis software allows you to select which button was facing north

during the count; it just defaults to button #3. We recommend that (if pos-

sible) you use the default direction, since it eliminates one source of error

when you do the analysis. If you don’t use the default direction, it is im-

portant to note this. If you keep good notes in the ﬁeld, you won’t have any

problems, no matter which way the TDC Ultra is aligned.

How to do a Turning Movement Study

When you are ready to begin a Standard Turning Movement study, select

Count from the Main Menu, then select New and then select TM.

You are then prompted to select a site code type and assign a site code.

Refer to chapter 2 for information on selecting a site code.

Interval

Once you have programmed a site code for the study, you are prompted

to choose the interval length that will be used.

You are given the choice of 1, 5, 15, 30, or 60 minute intervals. An In-

terval is the amount of time the TDC Ultra collects data before it stores

the accumulated totals in memory. You are barely aware of intervals

1 5 15 30 60 EXIT

Select interval

duration (minutes).

Press DO to accept

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Ultra Start 15xx Bedienungsanleitung Seite 36