Showing delay measurements in lists

In a delay measurement, the average delay is calculated for all observed vehicles compared to a trip without any other vehicles, signal controls or other required stops. Reversing vehicles are not taken into account.

All vehicles that pass the vehicle travel time measurements are recorded by delay measurement.

Note: If a vehicle is recorded by several travel time measurements, it is correspondingly often entered in the delay measurement.

By default, the data for all vehicle classes is entered together. You can also show the data for certain vehicle classes separately in the evaluation (Configuring evaluations of the result attributes for lists).

You can save the following data and data formats:

Output ASCII file MDB table

Attribute file from attribute list

Aggregated data

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Raw data

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Result of evaluation of delay measurements

A delay measurement may include the following attribute values:

Column Description

SimRun

Simulation run: Number of simulation run

TimeInt

Time Interval: Duration of the evaluation intervals during which the data is aggregated

DelayMeasurement

Delay measurement: Number and name of delay measurement

StopDelay

Average stopped delay per vehicle in seconds without stops at PT stops and in parking lots

VehDelay

Vehicle delay: Average delay of all vehicles

The delay of a vehicle in leaving a travel time measurement is obtained by subtracting the theoretical (ideal) travel time from the actual travel time. Negative delay cannot occur.

The theoretical travel time is the travel time which could be achieved if there were no other vehicles and/or no signal controls or other reasons for stops.

Delay does not account for deceleration in reduced speed areas, negative delay cannot occur (Using reduced speed areas to modify desired speed).

To calculate the delay caused by a desired speed decision, Vissim calculates a theoretical speed and compares it with the current speed (Using desired speed to modify desired speed decisions).

The actual travel time does not include any passenger service times of PT vehicles at stops and no parking time in real parking lots.

The delay due to braking before a PT stop and/or the subsequent acceleration after a PT stop are part of the delay.

Stops

Average number of vehicle stops per vehicle without stops at PT stops and in parking lots

Vehs

Number of vehicles

PersDelay

Person delay: Average delay [s] of all occupants of the vehicles

Pers

Number of occupants in the vehicles: number of vehicles * average occupancy rate