Instruction manual

Per-Vehicle (Raw) data is stored in a straight fashion. As vehicles are detected and the information (speed, length, etc.)

is gathered, the data is stored sequentially in memory in a long record. During collection, or during testing, the Phoenix

II will allow you to monitor any or all lanes.

2.d. Binned Storage and Specification Functions

Binned Storage is very similar to Per-Vehicle (Raw) storage that you can have any combination of lanes and each lane

can be enabled for directional operation shown as additional lanes of traffic. Binned Storage supports the same sensor

modes and lane configurations.

The difference in the modes is the method of storage. In Per-Vehicle (Raw) Storage, the Phoenix II stores all data in

chronological order as the vehicles are detected and data is registered (speed, length, etc.). Binned Storage sorts and

classifies the data into separate categories or “Bins”. The vehicle is then added to the correct Bin #. In this fashion, you

can retrieve totals for various types of vehicles.

There are five classification Bin types (not Including WIM data):

Axle

Data is binned by number of Axles and Spacing Classification. For example: FHWA

Scheme-F, which has 13 bins, 60 bins are available if needed.

Speed

Data is binned by the individual vehicles speed. 60 speed bins are available.

Length

Data is binned by the individual vehicles overall length. 60 length bins are available.

Gap

Data is binned by the distance between vehicles, from the tail of the first vehicle to the

nose of the second vehicle (up to 60 bins).

Headway

Data is binned by the time vehicles are going in the same direction, from the nose of the

first vehicle to the nose of the second vehicle (up to 60 bins).

Each lane can also be enabled to do two dimensional binning of either “Speed by Length”, “Speed by Axle”, or both.

This mode creates a table giving you individual speed bins for each vehicle type or for each vehicle length category.

Each category or “Bin” has been predefined as to what it represents. For example, Axle Bin #1 is for motorcycles,

Speed Bin #1 is for vehicles traveling between 1 and 19.9MPH. While these bins have preset to be the most common

categories, you may change the type and number of bins for each binning mode. See the Centurion Software Help

Menu for more information on modifying these bin definitions to your own specific needs.

Binning Storage also supports the “Lane Overlap” function. Refer to the previous section, “Per-Vehicle (Raw) Storage

and Specific Functions” for a detailed explanation.

IMPORTANT NOTE: You must make sure that for each road tube pair that the longer tube is always equal to

or longer than the short tube in the pair when measures from the edge of the pavement closest to the

counter. For example, when doing Same Direction road tube 3 (of pair 1 & 3) must be equal to or longer from

the edge of the pavement to the counter than road tube 1 is from the edge of the pavement to the counter.

The same is true for pairs 2 & 4. In the Opposite Direction, the pairs change to 1 & 4 and 2 & 3 where road

tube 4 must be longer from the edge than road tube 1 and road tube 3 must be longer than road tube 2.