Asks for the value of a certain variable of the named multi-entry/multi-exit (e3) detector. The value returned is the state of the asked variable/value within the last simulation step. Please note that for asking values from your multi-entry/multi-exit detectors with TraCI, you have to:

define them
set their frequency to 1s

The following variable values can be retrieved, the type of the return value is also shown in the table.

**Overview Retrievable Multi-Entry/Multi-Exit Detector Variables**
Variable	ValueType	Description
id list (0x00)	stringList	Returns a list of ids of all multi-entry/multi-exit detectors within the scenario (the given DetectorID is ignored)
count (0x01)	int	Returns the number of multi-entry/multi-exit detectors within the scenario (the given DetectorID is ignored)
last step vehicle number (0x10)	integer	Returns the number of vehicles that have been within the named multi-entry/multi-exit detector within the last simulation step [#]; Note: This value corresponds to the vehicleSumWithin measure of multi-entry/multi-exit detectors.
last step mean speed (0x11)	double	Returns the mean speed of vehicles that have been within the named multi-entry/multi-exit detector within the last simulation step [m/s] Note: This value corresponds to the meanSpeedWithin measure of multi-entry/multi-exit detectors.
last step vehicle ids (0x12)	stringList	Returns the list of ids of vehicles that have been within the named multi-entry/multi-exit detector in the last simulation step
last step halting vehicles number (0x14)	int	Returns the number of vehicles which were halting during the last time step

Response 0xb1: MeMeDetector Variable

Variable	Multi-Entry/Multi-Exit Detector ID	Return type of the variable	<VARIABLE_VALUE>
ubyte	string	ubyte	<return_type>

The respond to a "Command Get MeMeDetector Variable".

Notes

You can find some further description on multi-entry/multi-exit detectors

This page was last modified on 28 October 2011, at 11:55.