CycleStreets main presentation to OSM State of the Map 2009

CycleStreets.net UK-wide bicycle journey planner & photomap Martin Lucas-Smith For Cyclists, By Cyclists www.CycleStreets.net @CycleStreets

CycleStreets System of two parts: Cycle journey planner Photomap Online service Campaigning tool

CycleStreets: history  Cambridge-only  Originally written for Cambridge Cycling Campaign  Written by colleague Simon Nuttall  Launched June 2006  Google Map –based  5,000 lines drawn over satellite imagery  50,000 journeys planned

CycleStreets: history  Lots of requests for same thing in other places around the UK  OSM obvious data source for UK-wide system  Result is CycleStreets  Andy’s OpenCycleMap cartography  Went to public beta in March 2009  17,000 journeys  No promotion so far

CycleStreets: UK-wide

Journey Planner

Namefinder used for locations

Gives Fastest + Quietest + Shortest

Route feedback goes to OSM contacts

KML and GPX export

Code  Object PHP, with a few libraries used  Currently MySQL  Looking at PostGres  Maybe replace core engine with C++ module?  Or use another engine: yet to evaluate  Keen to build a project team  Code not yet open sourced but will be  Routing is all documented

Routing documented

Routing  Custom-written engine  Takes Britain.osm around every two days (nightly soon)  Import process  Import takes 5 hours to work through all stages  ‘Cellular optimisation’ to get speed  80% of data is discarded or abstracted  We have one dual-core machine only (at present)  Handled 1 plan per second on day of tube strike

Scoring  We collapse matrix of OSM tags into 40 ‘Provision Types’  Each has:  Maximum achievable speed (tweaked subjectively)  Quietness factor (also tweaked subjectively)  Cycleable? (boolean)  Walkable? (boolean)  One-way? (boolean)  Delay (seconds)  These then mapped onto each line to create 6 scores (fastest/shortest/quietest + in reverse)  Conversion table and Provision Types table:

Conversion from OSM

Provision Types – as used by the engine

Cellular optimisation  Our method of reducing data volume by 80% A A 9 8 4 9: AC 10 7: AD,BD D 3 B B 6 6: BC C C 9 Park: 4 nodes & 7 ways After: 3 nodes & 3 ways

Photomap: cycling photos on map

Upload photo / video / Flickr import

Photomap: add categorisation data

Photomap: categorisation

Listings e.g. “All cycle parking problems in Cambridge”

Other features: RSS feed, Galleries, More photos near here, My journeys, Info about this area page, Search, XML interface etc.

Features about to appear  Hills/contours  Will use SRTM (Aster later)  Local Authority backend to prioritise problems shown in photos and resolve them  Tools for getting feedback to OSM people  Photos within route listings  In correct direction  Gives a good idea of journey before riding  Was in original system  URL API

Photos en route

http://cambridge.cyclestreets.net/ journey/YorkStreet/

http://cambridge.cyclestreets.net/ journey/YorkStreet/Downing Place/

Routing errors: three classes 1. Data incomplete in area  (But we have no way of knowing!)  Or data doesn’t join up or is mis-tagged 2. Conversion errors  Our simplification from OSM matrix to 40 provision types 3. Engine errors  But Cambridge data is so good so bad routes are due to the engine not the data

Problems  Lack of tools to find where ways don’t join properly  Bad joins cause many odd routes  So we wrote our own ‘snooker ball’ views  No way to find out how complete an area is  Need for data we can query  So we can manage expectations  Coping with sheer volume of data!

Other points  Must avoid subjective data  Some cyclists are fine with busy traffic  Other cyclists use only quiet streets  Let the engine/user make the decisions  Use of generic data for use by specific community  Data such as surface, cycle lane widths, pinch points, path quality, are things which would improve the routing  Would it work in other countries?  Yes, but scoring table would be different  Cycle tracks: UK vs. Holland: different expectations

Please try CycleStreets and give feedback!  Feedback in an area you know is very useful to us  Use of OSM data for real-life routing means data errors will be found quicker  So better for OSM ...  and better for CycleStreets  Community aspect very important to us  Good links with cycling bodies  All feedback welcome!

Martin Lucas-Smith, www.CycleStreets.net Twitter: @cyclestreets info@cyclestreets.net

CycleStreets main presentation to OSM State of the Map 2009

by CycleStreets on Jul 14, 2009

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CycleStreets main presentation to OSM State of the Map 2009 Presentation Transcript