Accessibility by bicycle and car to secondary schools

This repository aims to provide a general methodological framework for assessing the accessibility to intermediate schools (ISCED level 2) for children aged under 15 using free and open data sources and solutions.

The analysis focuses on a set of case studies covering the GRANULAR Living Labs and Replication Labs. The idea is to produce a reproducible framework in R, facilitating its extension to other geographic areas or services of interest.

Furthermore and taking into account previous data delivery on accessibility to towns and city in Europe, this frameworks aims to further explore several aspects of accessibility indicators for services of interest:

• Refining accessibility indicators based on origin (young population rather than total population) and destination attributes (public/private schools, ISCED levels).
• Combine several transport modes: road and bicycle are used to discuss, in particular, the theoretical possibilities of transport shift in some areas.

Compared to previous work, an additional routing engine, still based on the OpenStreetMap network, is explored: Valhalla. Compared to OSRM, previously used and adapted for large computations, this routing service offers more possibilities for creating custom routing profiles (define maximum speed, taking hilliness into account for calculating cycling travel time, etc).

Several datasets are produced, covering 13 case studies (7 GRANULAR Living Labs and 6 Replication Labs) at different geographic granularities (1km grid, LAU, living-replication labs). The results are presented in a set of four notebooks combining R code and documentation, showing how the methodological framework has been implemented and adapted to all GRANULAR’s living and replication labs. They also present the output indicators and show how to import and display them on a map or a plot:

• 1. Introduction: State of the art, presentation of the general methodological workflow and summary of indicators produced. This is the readme.html document of this archive. It introduces and summarize the content of the 3 following notebooks
• 2. Implementation of the methodological framework in Pays Pyrénées Méditerranée (notebooks/schools-accessibility.html)
• 3. Adaptation of the methodological framework to GRANULAR’s living and replication labs (notebooks/schools-repro.html)
• 4. Comparing two open source routing engines: OSRM and Valhalla (notebooks/schools-osrm_valhalla.html)