How home to school distances are calculated

Transport data and routing software

The distance between each residential address, its nearest five primary schools and its nearest five secondary schools has been calculated using routing software called Routefinder Pro. The transport network used by Routefinder pro was supplied by Ordnance Survey. The road network dataset is the OS Integrated Transport Network layer. The footpath network dataset is OS Urban Paths. These networks extend to 10km outside of the county boundary.

Snapshot in time

Our property gazetteer is updated daily, however, the process of calculating distances to schools is a snapshot in time. This is because it is a large process intended to be run annually. This means the transport network, school locations and home locations are to our knowledge accurate as at August 2018.

Accuracy of calculations

The distance calculation algorithm finds the nearest node on the transport network to the property point. Then it calculates the shortest route along the transport network to the node nearest to the school point. The points are located somewhere in the boundaries of the schools and properties but the network, algorithm and points do not take into account access points and driveways. For this reason the results will not be 100 per cent representative of real life travel but nevertheless give a very good indication of the distance travelling from point A to point B when compared to "as the crow flies" calculations. Where the nearest school is less than 0.2 miles from the next nearest school and either part of the school’s admissions criteria or where eligibility for free school transport is a consideration, we recommend that you request that a definitive calculation is made by contacting schooladmissions@herefordshire.gov.uk with your full address.

Scope of calculations

This project was originally run for internal analysis. For this reason, private schools have not been included. At present only residential addresses have been included in the exercise, but we will add non-residential addresses in the future.

If you cannot find your home address on the mapping system please email gismapping@hoople.ltd.co.uk We will be able to check we have correct property information to ensure the property, any other new properties, paths, roads and error corrections are included the next time the exercise is run.