Questions tagged [road]

A road is a thoroughfare, route, or way on land between two places.

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Global Moran I for road crash analysis

I am performing Global Moran's I on road crash point data on ArcGIS Pro. I have around 3000 point features. As far as I understand, first I need to find the threshold distance using an incremental ...
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2 votes
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Distance along line network between set of points to set of hubs

I am trying to measure distance between towns (light grey in attached screenshot) and their district capitals (light purple) along usable roads (dashed blue). I used the GRASS v.distance plugin to ...
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How to keep roadnetwork attributes by cutting it to a service area in QGIS?

I extracted a road network including attributes (e.g., categorization of different types of highways) using QuickOSM. My goal is to cut this original road network to a 50km drivable radius from a ...
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Route direction based on road width?

I have road polyline data that contains a road width field (in meters) and I want to visualize road direction, based on this road width field. The road direction that I mean is kind of like this: (...
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Editing a WMS layer

For a school project, I'd like to represent the public transport network of our city (using QGIS). I found a WMS layer from an official source, but some bus lines are missing, and others don't exist ...
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Buffering roads leads to one big circle in QGIS

I am trying to create buffers around specific roads I am working with. I carried out the following steps: I highlighted all of the roads: I set out to create a buffer zone. The buffer was created. ...
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3 votes
1 answer
120 views

Representing roads consisting of polylines as polygons in QGIS

I am working with some roads in London that I downloaded online. The roads are represented as lines like below: How can I transform each road from a line into a polygon in QGIS? So that the roads ...
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Extract nodes and edges as road network from osm.pbf file with python

I have downloaded the israël's osm.pbf file from geofabrik. I want to extract the road network's country, which means a list of edges between two nodes ids. For a such tiny country, this list should ...
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3 votes
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Adding minimum margin between roads in QGIS

I'm wondering if there's a way to add a minimum space between roads that are too close together in a map. Accuracy is not my goal, I just want to make it visually as clear and clean as possible. Could ...
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Getting width or area of line objects obtained from OpenStreetMap

I want to get width or area of the road data in OpenStreetMap. All of the road data from OSM are lines, so I cannot get the width or area info of these roads. If these were polygon data, I would have ...
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Identifying road intersections in QGIS [closed]

I'm currently in a project where I need to identify whether the road exist in an intersection or not. However there are 700 roads which is a hassle if I do it manually. Is it possible to identify ...
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2 votes
1 answer
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MultiPolygonZ to nearest line using a road network (or: how far is the next highway from a project site?)

I have a MultiPolygonZ layer of Project Sites (ca. 700 features, mostly 1 polygon per feature) and want to get the shortest distance on a road network to the nearest subset of a line layer, e.g. the ...
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How to use SDO_LRS.OFFSET_GEOM_SEGMENT to offset a line in Oracle Spatial

I am trying to offset a line perpendicularly by a few metres (it follows a road and I'd like to move it to one side of the road). The line is an SDO_GEOMETRY object of SDO_GTYPE = 2002 (LINE/CURVE). I ...
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Merging highways with two strokes into single path using QGIS

In QGIS some of my vector layers (shapefiles) for roads have two paths. For highways, I assume this is for divided lanes, but I only want a single path to make it easier to style in Illustrator. How ...
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Labelling minor and major streets for entire city on layout using ArcMap

I've been trying to create an ArcMap layout which shows intersections in a given city alongside the names of minor and major streets. Currently, I have the intersections properly placed and I have a ...
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Geocode/Add values from Excel to ArcMap based on 4 fields

I have an Excel file which contains 4 key fields: "FROM" , "TO", "STREET" and "# of Symbols". Here "FROM" refers to a starting street position, "...
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1 vote
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sDNA - cycle model based on start and end elevations rather than 3d shapefile

I want to run a cycle roundtrip model in sDNA. My file is a road center line (RCL) map, containing z coordinates (start Z, end Z - image attached). The RCL vector file is shown by GRASS GIS as 3D, but ...
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Road network division and best maintenance facility location using ArcMap

I am using ArcMap. I have a national road network and I would like to divide it in several zones, so each zone would get the same amount of roads (from 150 to 250 km) - to get as equal zones as ...
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Roads randomly segmented

I've encountered a problem I'd like to fix. I have two shapefiles that are in essentially the same spot. (Road Centerlines) We had a company run an analysis of the road quality. When they gave us the ...
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How to batch calculate vector layer road lengths in QGIS?

I'm trying to calculate the road length for hundreds of layers, each one being a small road vector layer. I usually follow the process at https://www.qgistutorials.com/en/docs/calculating_line_lengths....
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1 answer
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How to do pgr_analyzeoneway pgrouting

I try to do pgr_analyzeoneway to my network road data from OSM. But there's some parameter that I don't know what I should input event though already read the example: s_in_rules: text[] source node ...
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Calculating road travel distance between point and polygon layers [closed]

I am trying to calculate the top three shortest distances from a point file (buildings) to a polygon file (designated natural areas) via road networks. I basically need the "Join attribute by ...
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6 votes
4 answers
197 views

Automated extraction of road network from points

I have a huge dataset containing about zillion of points representing tracking locations of cars on the roads. I also have roads datasets to compare to (from 3 different sources), to use for training ...
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Is there a tool like accumulated cost but where the values are multiplied instead of subtracted/added?

I'm looking to model anuran dispersal and create a "survival surface" wherein the resulting raster values reflect the maximum probability of survival of an individual after crossing multiple ...
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R dangerous streets: match routes and crashes

This is my first attempt with mapping in R. I have posted my question also in openTransportDataDemo github and I copy it here to hopefully gain broader attention: My goal is to find the roads where ...
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1 vote
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Obtaining road information from route

I need to obtain information (road surface typology, max speed limit etc.) on all the roads that make my route, from A to B. The inputs of my problem will be waypoints, obtained by GPS coordinates. I ...
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2 votes
1 answer
125 views

Flooded roads and deprived communities: QGIS route analysis function to avoid flooded roads?

In QGIS I am analysing the flooding of road networks. I have created a vector line layer of all the stretches of roads in my study area where high risk flood extent areas intersect them. I now want to ...
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Clipping with Voronoi polygon using QGIS

I'm trying to clip a road network (polyline) with Voronoi polygons. The polyline don't clip but I don't know why. I try to separate my road network according to geographical points collected in the ...
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1 vote
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Creating Road Edge of Pavements from Road Centerlines Data using QGIS

Creating Road Edge of Pavements from Road Centerlines using QGIS I have a Road Centerline data set and would like to use it to create a Road Edge Of Pavements data set that I could then export to a ...
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4 votes
1 answer
451 views

Mapping polygons into lines and projecting lines on road network

I have a layer with polygons that describe road damages. I have then another layer with road network lines. The layers are shown in the picture. I need to project the polygons as lines to the road ...
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Road density calculation

I have a vector layer of about 62km^2. I have a vector layer of roads within that area. How do I calculate the road density (km/km2)? I did a union between the road layer and the area layer, then I ...
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Converting a Road shp file into a continous Road Raster in QGIS?

I have converted a Road shp file into a Raster in QGIS, however after the conversion the Road is no longer continous (i.e only the cell corners are touching). I have tried increasing the resolution ...
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2 votes
1 answer
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Feeding direction of the road segments in QNEAT3 plugin

I am going to use the Iso-Area algorithm of the QNEAT3 plugin to generate Isochrones. I need to determine which parts of the road network are one-way and which parts are two-way. In the way that for ...
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1 answer
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Seeking incline of roads data

I need to plot the incline of roads in England. I could estimate this using elevation data, however this would be a significant amount of work. Does this data already exists (ideally free with a ...
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Seeking road network of Sweden with speed limits

I need road network data of Sweden with the speed limit of each segment of the road. I downloaded it from https://download.geofabrik.de/ but unfortunately, there are a lot of missing values there. Is ...
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2 votes
1 answer
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Limiting number of duplicate labels using QGIS

I am using QGIS 3.10. I am trying to draw a map of the US interstate highway. How could I limit the number of labels to just a handful per each interestate highway? I have tried all the various ...
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0 votes
1 answer
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Pairing line segments that follow a similar path

I have a shapefile with a regional travel model comprised of straight line features (model.shp, blue in the image). These lines roughly match the actual paths of the roadways they represent (road.shp, ...
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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
0 answers
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How to calculate area of a double-line road network in QGIS?

I have a line vector file that displays a road network. Most roads consist of a double-line indicating the sides of the road (hence the width of individual segments), but some roads are indicated by a ...
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1 answer
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USGS topo symbols for light-duty and unimproved roads

Mapping in QGIS 3.14, I want to use the same symbol as the local historical USGS 24K quads use for unimproved road and light-duty road. An example can be seen here (the black continuous road and the ...
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1 vote
2 answers
4k views

Roads not showing in Google Earth Pro

The road names are no longer showing on my Google Earth Pro. The only general layers available in the bottom left panel are "primary Database " and "terrain". I have tried turning ...
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2 votes
1 answer
548 views

Why osmId is not the same across the same road?

I download .shp and .dbf files for roads, extract it and save to database. I display points with the same name of street on my own Google Map. This is how it looks like: I was interested in how osmID ...
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OSM roadways shapefile - Completing missing road names

I have a shapefile for the road network in Portugal that I downloaded from a OpenStreetMap mirror site (geofabrik), dated about a month ago. A little context beforehand for those not familiar with the ...
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1 vote
3 answers
413 views

Convert exported attribute table back to shapefile in QGIS

I exported the attribute table of a shapefile to Excel (also saved in CSV). And I'm trying to add some columns to the table, then convert the table back to shapefile with the new columns. The ...
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0 votes
1 answer
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Road infrastructure efficiency measurement [closed]

Is there any tool/script that shows the goodness of road infrastructure. For example, if you want to compare which of the two cities road network is better.
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5 votes
1 answer
203 views

Blending features in QGIS: Approximating road edges for map render

I'm having trouble getting the right render for the tertiary roads and service roads look in my map render. I'm trying to get road edges like in the old USGS topo maps: Notice how the road interior ...
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2 votes
0 answers
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What do these distance numbers mean?

In the picture below, the red line is State Hwy 15, while the lake in the picture is Sooner lake. Please note that the highway intersects the lake several times and is very close to it at a number of ...
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4 votes
2 answers
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Divide a polygon into multiple small polygons using a MultiLineString

I'm trying to divide a polygon grid into multiple smaller polygons basis their intersection with a MultiLineString using Shapely. Following code works good for LineString but not for intersecting ...
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Altitude information for European highways

I need to calculate the gradient in major European highways. Fot this I need altitude data for each highway, let's say every 100 meters. Are there such kind of data publicly available? If not, I am ...
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8 votes
1 answer
2k views

Place label along line near start and end of line in QGIS

I have four fields managing the numbering of the start and end of road sections. I created two label rules, one for the start and one for the end of the road sections. I set the position of the ...
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