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

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Equivalent of “merge divided highways” in R

I want to make a map to print out based on openstreetmap data, and have successfully loaded the data into R, the programming language I'm most familiar with. To make things look nicer, I want to ...
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14 views

List of Roads in Southern Africa?

I am developing an auto insurance system/App which will assign a premium charge for each journey based on the routes which the policy holder uses. The user will be able to select alternate routes with ...
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32 views

calculating sinuosity of each road segment

I want to calculate the sinuocity of each road segment of a vector shapefile which contains roads. I have downloaded the python script from enter link description here but I don't know what to do ...
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12 views

Seeking priority roads data?

Is there any data source for priority roads(: roads which are indicated to have priority with a traffic sign on site, overriding the 'priority to the right' rule) excluding OpenStreetMap? The bigger ...
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1answer
35 views

Road snapping in R - snapPointsToLine / Projection Problem

1. Introduction (you may skip this if you like) In order to implement a road snapping feature in R for recorded positioning data, I first searched the internet for possible solutions to the problem: ...
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1answer
184 views

Trace tool being very erratic in ArcMap?

Right now I am working on a project where I have a road network, and I have a layer with points on a bus route. I am trying to trace these points along the road network to create bus routes. It was ...
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2answers
27 views

Creating Drive Time Polygons Across State Boundaries Using OSM?

I am using pgRouting on OpenStreetMaps to create drive time polygons. The challenge is that at state boundaries, these polygons effectively stop, since the roads in OSM are segmented at the state ...
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1answer
59 views

Barefoot more Details Road ID

I currently using Barefoot (https://github.com/bmwcarit/barefoot) for several Route Matching tasks. The installation and usage of Barefoot just worked fine. The matching already works and I got some ...
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1answer
41 views

Why is a single road sometimes split into separate layers?

I'm using data from the Transportation section of the National Map (US). They provide three layers for roads: Trans_RoadSegment, Trans_RoadSegment2, and Trans_RoadSegment3. I seem to recall this ...
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15 views

What is the relationship between the bearing the 'road' distance between two points?

Given the two points, we know how to calculate the shortest distance between them, and the bearing from one point, in order to reach the other point. Also, we know the loxodromic distance between ...
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1answer
35 views

How to create or reclassify a land cover raster based on distance to roads in ArcGIS 10.4?

I am using a raster of land cover (Globcover 2.2, 300 m resolution), which I managed to reclassify (in 2 land cover categories) and clip to my region of interest. I also have a shapefile of the roads ...
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37 views

Is there any restriction for downloading google maps road network and do analysis on it

Would it be legal to download google road network and perform analysis on that data without officially taking their consent, and publish the findings. Is there any example similar to it?
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19 views

USA Road Network Data Set Options?

I need a contiguous, nationwide USA Road Network with speed limits, distances, etc. I have been using TIGER but the challenge is at state boundaries - where contiguous road segments are split. Is ...
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29 views

What is a good data structure and file format for describing road network geometry AND topology?

I am trying to emulate the road network from OSM or Google (or Waze, etc.) locally, so that I can run some algorithms on it. For that, I want to represent these roads as graphs, where each edge would ...
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0answers
28 views

Road network per grid cell with weighting [closed]

Im trying to calculate road network per grid cell. I did it with the help of Measure length within vector grid? & Calculate line distances inside of polygons using ArcGIS for Desktop? but I am ...
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11 views

Work least Cost path for Road maintain certain road gradient

How may I be able to do a least cost path maintaining the required gradient and other standards like the turning radii for road on slopes? I mean to use ArcGIS desktop 10.3!
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36 views

$length calculation anomaly

A polyline layer's (green) length is being calculated via $length. Result: ~100 meters (EPSG 31466). A buffer of 5meters is created and via Voronoi Polygons (and several other steps) a centerline is ...
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1answer
57 views

How to calculate distance from point to nearest polygoin via road network (polyline) ARCMap 10.3.1

Using ArcMap, is it possible calculate distance from a postcode (point) to nearest polygon using a road network layer (polyline)? As opposed to just calculating Euclidean distance?
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23 views

Qgis network prepare road graph

I have been working on finding shortest path between two buildings. For that purpose i have created kml files of various streets, converted them into shape files and then merged all of them together. ...
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1answer
40 views

How are road polylines generalized?

I have a dataset of road lines obtained from digitized aerial imagery and I want to automate the generalization procedures using arcGIS model builder. I am using the ArcGIS 10.3 desktop suite. I have ...
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69 views

Merging speed limit from OpenStreetMap with Ordnance Survey data using ArcGIS for Desktop?

I am working with the Ordnance Survey ITN layer for the UK road network in ArcGIS. Unfortunately, whilst it has many attributes, speed limits is not one of them. I have produced roughly accurate ...
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27 views

How to find roads with similar incline?

I have no prior GIS experience, so please bare with me. What I'm trying to do is find a road (or a portions of road) from one country that is similar to another road(or portion of a road) from a ...
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5answers
22k views

Creating Centrelines from Road Polygons/Casings?

I want to create center lines from road polygons. Are there any automated tools in ArcGIS for Desktop to do this? I am including a Screenshot of my vector file below.
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77 views

Measure distance between points along a line in QGIS

I have a road network and different points connected to the roads. I would like to measure the distance between several points along the roads. Basically I want to do the same like the road graph ...
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1answer
53 views

Nearest Neighbour analysis between points in 2 tables utilizing with distances set along specific polyline roads

I'm trying to do a Nearest Neighbor analysis between points in 2 tables utilizing with distances set along specific polyline road files I have. I am attempting to determine the most cost effective way ...
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1answer
131 views

Where can I obtain 3D roadside features for UK?

I am doing some work on sight distances and I need a map or whatever of the UK that contains roadside features (road signs, trees etc) as well as the road features (road centreline, etc) so I can ...
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41 views

Roadnetwork_merging [closed]

I have a shapefile of a road network which has two lines to represent the two-way directions. My attribute consists of "fromnode", "Tonode", "length", "One-way" (every cell has a value of one here, ...
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1answer
363 views

MMQgis Plugin error in Qgis

I am using Qgis 1.9 . I have downloaded a plugin "mm qgis", however When I run this plugin I am getting following error: An error has occured while executing Python code: Traceback (most recent ...
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1answer
39 views

Visualizing road line segments within specific borders

I have a perhaps very simple ArcGIS question: How can I make the road line segments start or stop at the edge of the city's Census Block Groups?
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31 views

Road Graph doesn't find shortest path

Road Graph plugin in QGIS does not find the shortest path except when the feature is a single line. This might be due to the fact that I've used different CRS for layer and project while I edited the ...
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2answers
61 views

Trying to remove all data from intersections in FME

I have road data and my goal is to get rid of any data where intersections are. That way when two road features meet they do not intersect. I am using FME from safe to complete this. I ...
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2answers
683 views

How do I find the slope of road segments with point elevation data of the same linear path

I'm currently working on a project to calculate road grade along roughly 30 miles of highway. I need to isolate and portray all sections of road with more than a 5 percent grade; in hopes of finding ...
2
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0answers
34 views

Buffer for network roads in QGIS [duplicate]

How can I create "buffers" or vector from values ​​from a layer of points, where the "buffers" are "tied" to the streets? Example: A bus station, I would like to create vectors within 100 m range ...
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45 views

Cartodb: Linking social data to road color scheme

I am recreating this "smelly maps" project on cartodb. I'd like to create symbology on roads (IE: color roads red,blue,green,yellow) based on the information I am receiving on social media. View ...
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1answer
71 views

Manually digitizing roads vs. collapsing dual lines for centrelines

I am in the midst of doing a complete overhaul of our (abysmal) centrelines, and I was wondering how everyone creates their centrelines. We have a large rural area, and some of the roads meander all ...
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1answer
49 views

How to handle service roads off of highways?

I am setting up a road network for a our rural municipality in Canada, and I am wondering how to handle the service roads that run parallel to our highways. The buildings along these service roads ...
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3answers
54 views

Connecting points - plugin problem QGIS

I have a question related to connecting points in QGIS. I am doing a project relating to transport. I have a layer of points (bus stops) and I have to connect them according to a timetable (as runs a ...
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1answer
24 views

Is it possible to create a KML to list the road names within a buffer?

I often need to know the road names within a given buffer of a polygon. Is it possible to create a KML that would stick a push pin in the roads and list the name so I could see them all in a drop down ...
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1answer
44 views

ArcGIS - Make colour gradient in street network shapefile accordingly to buffer distance from central points (bus stops)

I need to do a colour gradient in the street network shapefile (cyan selection in the map attached, in a layer) accordingly to the distance from the points in the other layer (the more distant, the ...
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1answer
1k views

leaflet - Drawing line following the road

Short version: What I wish to be able to do is drawing a polyline along part of a road. In that way marking certain houses, along this road. Long Version: I have several houses that I wish to mark ...
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1answer
85 views

Reproducing GRASS GIS network analysis tutorial in QGIS Field Calculator

Im looking to reproduce the assigning of road speeds as denoted in a GRASS GIS tutorial (v.net.alloc tutorial), where the road speed is assigned by road type (i.e. 'interstate' = 75 mph etc.) to then ...
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2answers
191 views

Finding tight corners on roads using ArcGIS Desktop?

Problem: How can I pinpoint tight corners on a road dataset that might cause longer/larger vehicles difficulty in driving around. Assumptions: Ignore turns into junctions. Just interested in ...
2
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1answer
168 views

Isolating a street segment and assigning it a code

How should I go about making a map of alternate side of the street parking rules (in nyc?)? Does such a one already exist (I can't seem to find one)? If anyone is familiar with the transportation ...
2
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1answer
34 views

Road Type Symbology Query (non technical)

Does anyone know of a good resource/resources for road type symbologies? I am looking to update the symbology of a Road class layer which has 8 categories. The Road schedule is for Ireland. So a ...
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2answers
3k views

Segment road network line shapefile into new equal length segments line shapefile?

I would like to subdivide a road network for an entire state into segments of equal length. So, Highway X would be divided into 0.5 mile segments, with a record for each segment, and Highway Y would ...
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103 views

distance calculations splitting highways km, toll ways km, and other roads km

Till now I have been able to use MapPoint or Google Maps for a lot of things, specially directions and road trips distance calculations. Today I need again to perform (massive) road trips distance ...
2
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0answers
379 views

Create circles around a point on a map measuring the radius in hours

Disclaimer: I am not experienced in GIS and hope this question fits in this category. I was wondering whether it is somehow possible to create a circle* around a city, using Google Maps or the like, ...
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2answers
962 views

Using GIS in Civil Engineering construction field? [closed]

I am thinking "How to use GIS when construction HighWays,Buildings,pipe lines etc?" Is there any way we can utilize GIS for Civil Engineering construction industry to increase the efficiency of ...
2
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2answers
75 views

Any free Tools to display more than 5000 geography objects in SQL Server?

SQL Server 2008 and up allow you to create a spatial index. If you select records that include a geography or geometry object, a spatial data tab appears that can display up to 5000 points or lines or ...
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1answer
41 views

Distinguishing Road Network according to the ward within a municipality ArcGIS

I have a polygon layer of a municipality containing 14 wards as shown in figure i. I also have a polyline layer of road network irrespective of the ward. The road network have following attributes -...