Ultra Start 15xx Bedienungsanleitung PDF herunterladen (Seite 60)

TDC Ultra User’s Manual

6-4

How to do a

Signalized Intersection Delay Study

When you are ready to begin a Signalized Intersection Delay study, select

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

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

Refer to page 2-5 for information on selecting a site code.

Interval

Once you have selected the site code you’ll be prompted to select an

interval time length to use for the study. You are given the choice of 10,

11, 12, 13, 14, 15 or 16 seconds.

In general, you want to use an interval that is not a sub-multiple of

the signal’s cycle length so that you will always be sampling during

different parts of the signal cycle. If you don’t know the cycle length,

or don’t believe it matters (there is some argument about it in the lit-

erature), then choose 15 seconds, if for no other reason than it makes

the printouts look neater. Once you have selected the interval, you are

ready to begin the actual study.

Start Study

As with all of the studies done with the TDC Ultra, the count does

not start until you press the ﬁrst data key. The screen shown below is

displayed after you select the interval. The display shows the current

time so that you can start the count at the proper time.

10 11 12 13 14

15 16 secs EXIT

Select interval time

length to be used

Intersection Delay

Count:001 Int:001

Press any key...

13:53:24

1 2 ... 55 56 57 58 59 60 61 62 63 64 65 ... 123 124

Keine Kommentare

Ultra Start 15xx Bedienungsanleitung Seite 60