Transportation is the movement of anything from one location to another.
1
vote
1answer
69 views
Where can I download Real time Traffic and weather data for the world?
Where can I download real time data for traffic and weather? I'd like to use it as an overlay on a mapping service of my choice (eg. Google maps, OpenLayers etc.)
2
votes
1answer
26 views
Problem Joining FAA raster charts
I am new to GIS and I am trying to place the North and South Salt Lake City aeronautical charts in QGIS. The problem I'm having is that there is a black section where the two charts should touch. Am I ...
5
votes
2answers
105 views
R packages for deriving spatial clusters from origin-destination matrix
I have a matrix of origin-destination flows and I am trying to figure out the best way to derive X number of functional spatial clusters from the data. I haven't done this particular type of analysis ...
1
vote
0answers
59 views
How to use OSM2PO for transit routing?
I'm using OSM2PO (4.6.9) for "classic" routing, I mean highway network and everything works fine.
Now, I want to use it to route in a "transport" network, a bus network for instance. But I want the ...
1
vote
2answers
55 views
Where can I get public transportation locations for USA
I am trying to find a list of all public transportation/transit locations like subway stations, airports, bus terminals and bus stops for USA. Only major transit locations are required, rural bus ...
6
votes
1answer
210 views
Open Source solutions for building a Traffic Management System
I am trying to set an Open Source alternative to proprietry ITS (Intelligent Transportation Systems) The goal is to build a Traffic Management System for a middle size city center. Main requirements ...
2
votes
0answers
31 views
TRANSIMS interaction with OSGEO tools
Wow I've just discovered the world of TRANSIMS, a transport model with ambitious aims: "to model all aspects of human behaviour related to
transport in one consistent simulation framework" (Nagel, ...
2
votes
0answers
74 views
Plot the Shortest Paths in a Grid without any clash at a point of time
The efficient algorithm needs to be done and proved for the best solution for the given problem:
User inputs: (#) Size of the NxN Grid. (N); (#) No. of Paths: Z; (#) Source and Destination ...
5
votes
1answer
134 views
NYC Subway Line Station Order?
I've currently got data on the NYC subway stations (including name, position, and how many people entered and existed during a timeframe). Also, I have the data on which stations have which train ...
3
votes
2answers
63 views
Where can I get public transportation route information for USA?
I'm trying to find a list of public transit route information, mainly location of bus and train stops for the US. I've looked around at some of the Google products and openstreetmap but can't find ...
4
votes
1answer
77 views
High quality public transport trip planner examples? Trip visualization examples?
Do you know high-quality online public transport route/trip planners? I'm looking for sites with recognized usability, most carrier-owned planners are bad or very bad from Human-Computer Interaction ...
6
votes
3answers
581 views
Find a proper path between two nodes in a grid
This question is about finding a proper path (route) between two nodes (P,Q) in a grid (i.e., graph, network, ...). In our concept, we define a path proper (nice) if it is the most similar* to the ...
2
votes
0answers
31 views
OpenStreetMap XAPI request for “Member Of”
I'm trying to find a way to request public transportation info from the OSM XAPI. Those nodes can be best described as:
highway = *
member of = ( route = bus )
Is that even possible to do over the ...
2
votes
1answer
144 views
Create an optimized point layer derived from a road layer so that the driving distance between each point is x
Consider a classic state-wide or country-wide roadway network. I want to create a point layer, where each point is on the roadway network. This point layer will have each point separated by its ...
2
votes
2answers
191 views
Reinventing the wheel: Public Transit System
I'm building a public transit service in South Africa, and I initially started the project on PHP and MySQL. I've managed to get far with the simple stack, with:
Routing algorithm in PHP
Data ...
2
votes
2answers
97 views
Are there open standards for storing multi-modal routing graphs?
I'm looking for any open standards (or maybe best practices) for storing multi-modal routing graphs, eg. info for pedestrian, bike, public transport and car routing, etc.
Every data provider seems to ...
6
votes
5answers
1k views
Looking for a World Airport Database
I'm looking for a database that contains all (most, many...as many as it can) world airports. I know of one such set available - http://www.world-airport-database.com/database.php - but the terms ...
6
votes
1answer
191 views
Looking for best practices for determining turn penalties
Shortest path routing will often return routes with a lot of turns (zigzag shape).
If you want to get routes with fewer turns, you can use turn penalties to make turning more "expensive".
What are ...
3
votes
1answer
302 views
Using OSM data, pgRouting, and dummy data to develop an origin/destination travel matrix
Further to my previous question I was wondering if it is possible to add dummy node data without to do routing analysis.
ISSUE
I have a polygon layer that represents zonal attributes
I created a ...
5
votes
1answer
142 views
Literature on public transit network connectivity metrics
Are you aware of any literature or best practices for measuring the connectivity of a public transit network, taking both route geometry and the schedule into account?
In other words, I'd like to ...
2
votes
3answers
134 views
Looking for free Mexican transportation datasets
I have been looking for data of Mexico. What I am looking for is the data of a Transportation in Mexico, specifically Chihuahua province. I have checked out on ArcGIS online and Google but came up ...
13
votes
3answers
2k views
How can I optimize pgrouting for speed?
I am using pgrouting on a postgis database created through osm2pgrouting. It performs very good on a limited dataset (3.5k ways, all shortest path A* searches < 20 ms).
However since I have ...
5
votes
1answer
108 views
Vehicle travel data for the USA
I'm looking for vehicle travel data in the USA - at any spatial resolution smaller than the unit of a state, and ideally at a city level. I'm interested in daily, or weekly data and also any ...
12
votes
4answers
615 views
Database design: road topology in GIS
Is there a standard or a best practice way to store certain features about roads:
Road directionality:
One way streets: Roads going in one direction only
Center Turning lanes: roads that exist ...
5
votes
3answers
204 views
Calculating order of points along a line
I have a shape file with transportation lines and another file with all bus stops along each line (with an attribute which links stops with specific lines to which they belong).
I need to calculate ...
4
votes
2answers
230 views
Retrieve speed and number of Lanes in Google Maps API, OSM data or any other stream?
Is it possible to return the posted speed and number of lanes of a highway segment using Google Maps API, OSM data, or any other stream (paid for or free)?
5
votes
2answers
396 views
Calculate stop times/distances of transport lines - tools and procedure?
I need to calculate stop times of bus lines (extrapolation)
I have:
Shape file with all stops
shape file with control points where bus time was taken
Shape file with all bus routes
csv file with ...
1
vote
1answer
110 views
Finding intermediate points and speed over a segment
I have a dataset which is in the form of ( Time , Car ID, Speed at that moment, Lat,Long) and I need to do some machine learning on the data to answer the following questions :
Best route from ...
7
votes
4answers
312 views
Examples of web based Overweight/Oversize load permit routing on County Roads
Does anyone know of any US counties that have set up a web based overweight/oversize load permit routing system, preferably one that leverages GIS?
I know many state DOT's are doing this, but I don't ...
10
votes
2answers
446 views
Realtime traffic data provider(s)
What services provide realtime (or daily-updated) basic traffic informations for Western Europe ?
For example, traffic.com/Navteq provides such data to Bing Maps for US/Canada and Microsoft suggests ...
5
votes
1answer
94 views
Non-Research Transportation Raster applications
My experience with rasters is pretty basic. 99.95% of what I do involves vector and transportation modelling. In research, there are numerous transportation applications using rasters and imagery ...
7
votes
2answers
433 views
Help on creating a presentation for Highschool students
I was commissioned to do a presentation on GIS (well it'll mostly focus on transportation GIS) for about 50 high school students.
I'm looking for funny graphs / images that I can include in this ...
19
votes
4answers
1k views
Curved point-to-point “route maps”
I have recently been looking at airlines web pages that display their routes departing a certain city to all other cities they service. I would like to be able to create similar curved routes between ...
4
votes
1answer
368 views
Trip travel matrix on OSM data
Here's my situation:
I'm modeling travel logistics
I have 1,000 nodes, on my road network
I'd like to generate the minimum driving time distance between all these nodes
This process will be done 24 ...
7
votes
3answers
217 views
Custom, low-level representation of streets and traffic rules
I'm new to GIS, and I'm still trying to gain an understanding of what can be represented in the various GIS files. Very generally I know(/think) that you can represent points, that lines, polylines, ...
22
votes
7answers
2k views
Representation of network flows
This is a sample transportation network flow I've done a year ago based on 26 zones.
For a project I'm working on now, I need to represent the flows over 1,000 zones with directionality.
Any ...
7
votes
5answers
670 views
Buffers of public transportation transit times
I'd like to be able to create buffers/zones/rings of transit times using Denver's public transportation system. For an example of what I'm talking about, check out triptropnyc.com - I don't need it ...
4
votes
2answers
146 views
Transportation representation Standard on roads
Is there a GIS standard to display transportation specific information in GIS databases.
The information I'm interested in are:
Road Directionality
Center turning lanes
Ramps / Bridges / Over or ...
18
votes
8answers
3k views
Alternatives to pgRouting
I was wondering if there are any alternatives to pgRouting tools.
Thinking about it for a bit, I think the only alternative is to use R or RPY to do the analysis.
Basically I'm trying to solve ...
