Saving lane change data to a file

You can record the time and place of the lane change that was made. You can restrict the evaluation to vehicle classes and individual vehicles.

You can save the following data and data formats:

Output

ASCII file

MDB table

Attribute file from attribute list

Aggregated data

-

-

-

Raw data

*.spw

-

-

Note: This evaluation always uses metric units.

1.  From the Evaluation menu, choose > Configuration > Direct Output tab.

2.  In the Lane changes row select the option Write to file.

3.  You can change the time if you wish (Using the Direct output function to save evaluation results to files).

4.  Click the More button.

The Lane changes window opens.

5.  Make the desired changes:

Element Description
Filters
  • All vehicles: Includes all vehicles in the evaluation, regardless of their vehicle class
  • Filter by vehicle classes: Takes only the selected vehicle classes into account
  • Filter by sections: takes only the selected sections into account Sections have to be defined (Modeling sections). The level with the section and the the level on which vehicles move are the same. The middle of the vehicle's front edge lies outside the section.
  • Filter by individual vehicles:  If this option is selected, you can right-click the list and select vehicles by their number. Only the selected vehicles are taken into account.

6.  Confirm with OK.

7.  Start the simulation (Running a simulation).

A *.spw file is saved.

Result of lane change evaluation

The lane change file *.spw contains the following data:

Element

Description

File title

Name of evaluation

File

Path and name of network file

Comment

Optional comment from the simulation parameters

Date

Time of evaluation

PTV Vissim

Version number, service pack number, build number

Data

Data block with the attributes for each recorded vehicle

The data block of the evaluation file contains the following parameters:

Column Description
t

Starting time of lane change. t is the end of the time step in which the lane change starts. If you simulate with only one time step per simulation second, the lane change is already running for a second at this time.

VehNr

Vehicle number

v [m/s]

Speed [m/s]

Link No.

Link number

Lane

Number of the old lane

New Lane

Number of the new lane

VF

Vehicle number of old leading vehicle (0 = not available)

v VF

Speed [m/s] of old leading vehicle

dv VF

Speed difference [m/s] of old leading vehicle

dx VF

old leading vehicle: distance [m] between rear end position of the preceding vehicle and front end of the trailing vehicle

VB

Vehicle number of old trailing vehicle (0 = not available)

v VB

Speed [m/s] of old trailing vehicle

dv VB

Speed difference [m/s] of old trailing vehicle

dx VB

old trailing vehicle: distance [m] between rear end position of the preceding vehicle and front end of the trailing vehicle

new VF

Vehicle number of new leading vehicle (0 = not available)

v new VF

Speed [m/s] of leading vehicle

dv new VF

Speed difference [m/s] of new leading vehicle

dx new VF

new leading vehicle: distance [m] between rear end position of the preceding vehicle and front end of the trailing vehicle

new VB

Vehicle number of new trailing vehicle (0 = not available)

v new VB

Speed [m/s] of new trailing vehicle

dv new VB

Speed difference [m/s] of new trailing vehicle

dx new VB

new trailing vehicle: distance [m] between rear end position of the preceding vehicle and front end of the trailing vehicle

Example of evaluation of lane change file *.spw
Lane changes record
 
File:    C:\Users\Public\Documents\PTV Vision\PTV Vissim 2024\Examples Demo\3D - Complex Intersection Karlsruhe.DE\Karlsruhe 3D.inpx
Comment:  Example, SC 3-10
Date:    03.01.2024 12:23:33
PTV Vissim 2024.00-00* [253691]
 
t; VehNo; v [m/s]; Link No.; Lane; New Lane; VM; v VF [m/s];
 dv VF [m/s]; dx VF [m]; VB; v VB; dv VB [m/s]; dx VB; new VF; v new VF;
  dv new VF; dx new VF; new VB; v new VB; dv new VB; dx new VB
115.10; 203; 9.55; 7; 2; 1; 175; 0.00;
 9.55; 164.28; 0; -1.00; -1.00; -1.00;  198; 12.43;
  -2.89; 22.37; 0; -1.00; -1.00; -1.00;
128.50; 39; 13.30; 9; 3; 2; 48; 12.77;
0.53; 11.31; 0; -1.00; -1.00; -1.00; 10; 12.66;
  0.64; 9.11; 98; 9.19; 4.10; 0.58;
130.70; 40; 13.56; 9; 3; 2; 48; 13.11;
 0.45; 34.45; 47; 13.02; 0.54; 13.28; 98; 11.51;
  2.05; 6.39; 57; 9.53; 4.03; 0.58;
136.50; 180; 12.04; 9; 2; 1;  68; 10.39;
 1.65; 34.99; 0; -1.00; -1.00; -1.00; 102; 12.56;
  -0.52; 31.48; 105; 15.16; -3.13; 26.58;
141.80; 88; 12.00; 9; 3; 2; 66; 12.20;
 -0.19; 18.24; 0; -1.00; -1.00; -1.00;  58; 10.29;
  1.71; 8.42; 115; 12.52; -0.52; 17.11;
144.20; 115; 11.25; 9; 2; 1; 88; 9.80;
 1.46; 15.14; 134; 12.27; -1.02; 2.95;  117; 10.61;
  0.64; 25.67; 140; 14.61; -3.36; 105.09;
144.70; 134; 11.73; 9; 2; 1; 115; 11.06;
 0.66; 2.51; 0; -1.00; -1.00; -1.00; 117; 10.20;
  1.53; 31.93; 140; 14.53; -2.80; 96.74;
152.20; 272; 8.64; 7; 1; 2; 203; 0.00;
 8.64; 156.60; 0; -1.00; -1.00; -1.00; 265; 12.84;
  -4.19; 41.51; 0; -1.00; -1.00; -1.00;
164.90; 293; 8.70; 7; 1; 2; 203; 0.00;
 8.70; 156.69; 0; -1.00; -1.00; -1.00; 272; 7.72;
  0.99; 131.91; 0; -1.00; -1.00; -1.00;
174.80; 293; 11.48; 7; 2; 1; 272; 0.00;
 11.48; 28.49; 0; -1.00; -1.00; -1.00; 203; 0.00;
  11.48; 39.70; 296; 12.99; -1.51; 17.72;
215.20; 183; 10.61; 9; 3; 2; 194; 13.61;
-2.99; 21.95; 0; -1.00; -1.00; -1.00; 204; 12.34;
-1.73; 0.64; 165; 10.61; 0.00; 9.79;
…