Done it, divide the given headway by the average speed converted to metres/sec, so 678 / (63.88 * 1000 / 3600) gives 38.2
I can now usurp the service I've reverse engineered
OK I'm having to do some reverse engineering and have a problem coming up with a conversion. The subject is traffic detectors and the raw data is below. Somehow the figures need to be converted to produce the following:
Occupancy - 0 - straight from the Occupancy field.
Speed - 63.86 - the average speed taking all vehicles into account
Flow - 7 - simply the total of vehicles.
Headway - 38.22 - ???
So can anyone take the figures below and tell me how to compute a headway of 38.22 from them
I can now usurp the service I've reverse engineeredOK I'm having to do some reverse engineering and have a problem coming up with a conversion. The subject is traffic detectors and the raw data is below. Somehow the figures need to be converted to produce the following:
Occupancy - 0 - straight from the Occupancy field.
Speed - 63.86 - the average speed taking all vehicles into account
Flow - 7 - simply the total of vehicles.
Headway - 38.22 - ???
So can anyone take the figures below and tell me how to compute a headway of 38.22 from them
Code:
<Message Type="Data">
<Body Type="IntegratedData"
IntervalTime="300" - seconds
DataNumber="759"
Utc="1524800100" - seconds since 1/1/1970
MilliSeconds="27">
<Zone ZoneId="1"
Occupancy="0"
Confidence="8"
Length="27"
HeadWay="678"
Density="1">
<Class ClassNr="1"
NumVeh="5"
Speed="63"
GapTime="400" />
<Class ClassNr="2"
NumVeh="2"
Speed="66"
GapTime="408" />
<Class ClassNr="3"
NumVeh="0"
Speed="0"
GapTime="0" />
</Zone>
</Body>
</Message>
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