Wavetronix SmartSensor HD (101-0415) - User Guide Manual do Utilizador descarregar pdf (Página 70)

CHAPTER 7  DATA 69

vehicle will be placed in bin 2. If a vehicle is traveling 27 mph, then that vehicle will be

placed in bin 3.

You can change the speeds by clicking on a bin and using the +/- buttons to either increase

or decrease the value.

Class

e class bins allow you to classify vehicles by ranges of lengths. If you’re not sure what

lengths to use, consult your own agency’s guidelines. If your agency has no set classication

scheme, you can look to the measurements in Table 7.2 as an example; the tables show a

scheme called Scheme F, developed by the Maine DOT.

Lengths Scheme F

0–10 1

10–19 2, 3

19–35 4, 5, 6

35–256 7-13

4 Classiﬁcation Bins

Lengths Scheme F

0–10 1

10–19 2

19–24 3

24–54 4, 5, 6, 7

54–109 8, 9, 10

109–256 11, 12, 13

6 Classiﬁcation Bins

Table 7.1 – Scheme F Length Classiﬁcations

Approaches

Approaches are groupings of lanes used in data collection. Using approaches allows you to

collect per vehicle–based statistics that you could not otherwise get, such as the 85th per-

centile speed for all northbound lanes, and to store these statistics onboard the sensor. Be

aware that adding approaches will increase the size of your data reports, which will aect

the number of these reports your sensor can store in its onboard memory. See the Storage

section of this chapter for more information.

Click the button in the Approaches window to group lanes together in four dierent

approaches (see Figure 7.4).

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Wavetronix SmartSensor HD (101-0415) - User Guide Manual do Utilizador Página 70