Questions tagged [traffic]

In this context implies movement of cars, planes, ships, and trains etc, not packets of data across the web

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MATSim output visualization in QGIS

I am using MATSim for traffic simulation. I want to seek comment from people who have used MATSim output to visualize in GIS, especially, represent hourly link volume data on OSM or MATSim network ...
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5 votes
2 answers
61 views

Removing certains routes from pgrouting output table

I have used pgRouting to generated multiple many to many traffic routes different points of interest. I have used st_Dwithin to put a catchment area on the routing alogirthm, however the agg_cost(...
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177 views

Importing LandXML data to QGIS 3.22.3

I am fairly new to QGIS and working in the Environmental Impact field as a noise specialist. We use a noise modelling software called CadnaA which is powerful, but not very user-friendly. To get ...
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1 vote
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27 views

ArcGIS Network Analyst tools are not using historical traffic data to calculate travel time

I have successfully created and built my network dataset with Historical HERE traffic data. However, Network Analyst tools are not using my traffic data to calculate travel time. No matter what time ...
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2 votes
1 answer
182 views

QGIS: one way streets representation

How to manage the symbols of the one way street a representation? I have a field where each link is classified by one way o bidirectional. I would like that each link read this value to insert an ...
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Finding street intersections with high concentration of vehicle crashes using ArcGIS Pro

I'm trying to find street intersections with a high concentration of traffic crashes. First of all, I have tried with kernel density analysis, but I'm wondering if there is something that makes a sort ...
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Layer of roads segments with attribute "STEL" by rsd.cz NDIC

Is it possible download layer with attribute "STEL"? Attribute means segments of roads in Czech republic created by "ŘSD", more information at this link. "STEL" attribute ...
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2 votes
1 answer
85 views

Where do services that compute travel time get traffic data?

Recently, I have been studying routing services that calculate travel time and distance. And I had a question, where do these services get traffic data from. I found a lot of information about Google. ...
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60 views

Analyze using world traffic service

I want to analyze using world traffic service. There are several points on the map. From these points, the process of determining the area that can go for 15 minutes by car will be made. How can I do ...
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1 answer
59 views

Converting road segments into one full link and taking mean of traffic volume

I have road segments and want to convert them into one link (intersection to intersection). Image 1 shows the segments. The biggest issue is that each link has traffic volume and when converted to ...
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2 votes
0 answers
263 views

Street traffic flow (from Azure Map GeoJSON) to OpenStreetMap street network (graph)

The Ultimate Goal: I am trying to find the shortest and least traffic path between two points for a given pair of latitudes and longitudes on the map. This is rather standard in most of the maps, but ...
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726 views

Consuming real-time traffic data from Google Maps?

In order to microprocess an logistic study about the best path to take, I need to consume, somehow, real-time traffic data from Google Maps. Is there an "open source" way to do this? The ...
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3 votes
2 answers
101 views

Symbology for traffic direction into and out of city

I'm using QGIS 3.4.7. I have one vector layer with road lines and a second with city polygons (and a third with city centroid points if that is better). I have already used symbologies with arrows to ...
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1 vote
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166 views

Access Google traffic in Earth Engine

I wonder if there is a way for me to access the google traffic in my Earth Engine code so it shows up on my map? I've only seen pure javascript which I don't know how to implement in Earth engine.
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68 views

How do I calculate trips between selected traffic cells in QGIS?

I have a polygon layer representing traffic cells (from VISUM) and I have a matrix in Excel format which contains the calculated amount of trips between each cell in the polygon layer. Now I want to ...
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287 views

Static traffic visualization for certain streets with the help of historical traffic data in QGIS [closed]

The goal is to make a static map highlighting certain streets in a city that usually have high traffic (for example, highways and main roads). I am using OpenStreetMap for the city. The streets need ...
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1 vote
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70 views

Can I retrieve google map data for traffic and whose the users?

Can I retrieve Google map data for traffic on a specific street? Does the the data include attributes about the users who are creating the traffic (users age in the traffic, gender, etc.)?
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2 votes
1 answer
154 views

Seeking free data to calculate drive time based on traffic / congestion? [closed]

I'm looking to calculate drive time contours based on traffic data. I have road network data (with distances and speed limits), but the client wants to take real live traffic/congestion data into ...
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6 votes
0 answers
89 views

Avoiding border effect in traffic modeling?

I'm creating a traffic model (using the Four-Step Travel Demand procedure). I have a road network (grey lines and grey node) and traffic injector/attractor (orange lines and orange nodes) as it can ...
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1 vote
1 answer
376 views

Get sum of a field for each element of overlapping paths

I've used the very useful Openroute service to develop a number of routes which I have populated with traffic numbers (on each route). I want each section of road to present the total of a field (...
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1 vote
0 answers
103 views

What is the style of mapping used by Google Traffic?

I'm doing a piece of work that involves mapping traffic flow, and will be displaying it in a way that Google Traffic does. I know how to make the maps using QGIS, but is there a specific name for this ...
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2 votes
2 answers
257 views

Isochrones: v.iso.net

I have a line layer with multiple traffic lines: bus, train and tram. Those lines overlaps frecuently. Every line has its own speed limit and therefore time/cost. My goal is to do a time/cost map (...
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4 votes
1 answer
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Network analysis using QGIS?

I'm working on my bachelor thesis right now and I want to find a catchment area for different bus stops. Is there a function in QGIS where I could use a point layer as input, use ways as distances and ...
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1 vote
1 answer
817 views

How can I find out if there's a traffic light in the route given an array of lat, long (GPS positions)?

I've the minutely (60 seconds) GPS trail of a vehicle travelling in USA. I want to find out if in the particular 60 second GPS trail there's a traffic LIGHTS/SIGNS or not. Can I get this information ...
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1 vote
0 answers
304 views

How to set zoom on the basis of the road in Google maps API?

I worked out a similarity Project a Google traffic, I would implement the same Google traffic visualization about the Data Traffic What a depending on the zoom level displays them or hides them. For ...
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1 answer
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How to calculate information from overlapping cars paths on map

I have multiple geometry points that identify a car path in a time interval. Some cars can make a path that overlap another car path. I want to calculate the car speed to have different color ...
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1 vote
0 answers
94 views

Converting road number and mile post into coordinates? [closed]

I have a bunch of mile post and road number data and would like to turn it into lat/long coordinates very easily.
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3 votes
1 answer
2k views

Downloading google maps traffic in shp format?

Is it possible to get (download) the info of roads traffic (google maps.com) of an area (in shp format)? If yes, how?
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2 votes
1 answer
235 views

Expand Street Network passing through points using QGIS?

I have a road network (red) passing through some traffic data points (green): I want to expand this network to include all of the points. I already have a bigger street network (blue) from which I ...
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-1 votes
2 answers
3k views

Traffic Simulation in QGIS

I have several line layers in QGIS 2.8.3. I want to simulate traffic flow in this. Is there a plugin or any possibilty to run a traffic simulation on it.
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-3 votes
1 answer
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Need Traffic Accident Data [closed]

I am graduate student studying in GIS. My project is related with traffic accidents, but I cannot find the traffic accident data online. The scale could be a city or a state in US since I just ...
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0 votes
0 answers
109 views

Using linear referencing for real time traffic in ArcGIS Network Analyst?

I'm using real time customized traffic for Network Analysis in ArcGIS 10.2.2. The traffic display as segment based. In other words, when i want to show free flow for a road i have to assign one or ...
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1 vote
2 answers
222 views

Methods to determine if traffic accidents happen more frequently along sections of a highway with poor pavement?

I have a shapefile with highway pavement conditions and a point file with accidents. If I wanted to see if traffic accidents happen more frequently along sections of a highway with poor pavement ...
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2 votes
0 answers
501 views

How to format and use historical traffic data and to create a traffic enabled network? [closed]

I have speed factors for road segments collected at time intervals of one hour daily for a whole week. But I dont know how to format the data so that I can relate it with my digitised road segments in ...
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1 vote
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432 views

Road traffic database sample?

I would like to do some experiments on a traffic forecasting neural network and I need some real traffic data to run the network. My question is where can I download some real traffic statistics data ...
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2 votes
0 answers
238 views

What can I use to calculate drive times /with/ traffic considered?

I am looking to obtain drive times for a large list of addresses and want the results to take traffic conditions into consideration. For example, drive times from a distribution centre to a store at ...
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2 votes
0 answers
313 views

How does ArcGIS calculate Live Traffic in a network dataset?

I create a network analyst service in ArcGIS 10.2 with live traffic. The traffic is classified into four classes (stop and go, slow, moderate and free flow). I know that when the service uses ...
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4 votes
1 answer
329 views

Using Traffic with Network Analyst VRP

To the best of my understanding, setting a specific day under Analysis Settings for the VRP (vehicle routing problem) uses the Routing_ND historic traffic information. Is there some step I'm missing ...
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2 votes
0 answers
769 views

Using real time data (traffic) for network analyst in ArcGIS for Server? [closed]

I have a problem with using traffic data for routing. I'll describe the scenario: There is a local traffic service (real time) that has the speed of each segment in the network. This information is ...
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1 vote
1 answer
2k views

Downloadable historical traffic data?

I'm looking for historical traffic data on a decently large city. Specifically I need data points that can be used to infer the distribution of vehicle speeds across each road, but I don't want the ...
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0 votes
1 answer
673 views

Is it possible to get the positions of all the stoplights for a given area?

I would like to know if there is a database of longitude and latitude values that locate all stoplights for a given area in the US like a city or a state? How would one go about obtaining this info? ...
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0 votes
1 answer
1k views

Calculating average speed in various legs of bus route

I'm working on analyzing NYC MTA Bus traffic data. There are numerous buses traveling along the route, emitting gps data at random locations. I have about 30k records with bus_line, vehicle_id, ...
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0 votes
1 answer
502 views

Identify the direction of traveling road segment

I'm using pgRouting to find the least congested path using time as the cost metric. I am using average speed between two nodes to calculate time taken to travel in a segment. In pgRouting there is a ...
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4 votes
0 answers
284 views

Is Dynamic Traffic Format supported by QGIS?

I have to merge (Dynamic Traffic FORMAT) DTF file into QGIS. This data is only available from NAVTEQ or TOM TOM. When I have searched ArcGIS network analysis tool, there is a clear option for adding a ...
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4 votes
1 answer
2k views

How to make the thickness of traffic volume flow symbology proportional to traffic counts?

I can scale the bandwidth proportionally to the traffic volumes; however, I cannot show the directionality of the movements. Volumes for directional moves are stored in two different columns of a ...
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9 votes
2 answers
301 views

How to detect traffic incidents in set of GPS traces?

I have a large database of gps traces (long, lat, timestamp) and would like to see if I can detect when congestion occurs on roads from that data. Any ideas or pointers on good algorithms to use? ...
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