Daventry District Council, as a part of the wider Northamptonshire Waste Partnership, uses geographic information from Ordnance Survey to help generate significant cost savings and efficiency improvements by rationalising the number of domestic waste collection routes.
Under the European Union Waste Management Directive, the UK is required to reduce the amount of waste going to landfill by 75%; and with waste management being one of the largest areas of local authority expenditure, many councils are making strenuous efforts to improve the efficiency of waste collection services.
The growth in housing and population is generating significant increases in service demand. The county of Northamptonshire has been experiencing steady growth in population, and over the next 10 years Daventry is expecting an additional 20 000 inhabitants (and each 1 000 new properties represents at least one day’s work for one refuse collection vehicle).
The Northampton Waste Partnership brings together the management expertise of eight local authorities in order to develop a joint waste strategy. Additional advice was sought from White Young Green Consultants and Integrated Skills (specialists in the provision or high quality environmental management and services) to generate new collection routes; determine potential savings and to investigate the benefits of county-wide, cross-border working.
A bespoke solution was created specifically for the optimisation of refuse collection routing using Integrated Skills’s RouteSmart software, Ordnance Survey’s OS MasterMap® Integrated Transport Network™ (ITN) Layer with Road Routing Information (RRI) together with local knowledge from the service managers and the waste collection teams. The resultant system calculates routes, taking into account delays from left and right turns; intersections; weight restrictions and suitable time windows. Each route is then optimised by balancing the workload between routes on a daily or weekly basis.
All local authorities are already licensed to use Ordnance Survey data and RRI, which includes details such as one way streets; no entry; no left or right turns; bus and taxi lanes; dual carriageways; stop signs and width, height and weight restrictions.
From 1 April 2011, English and Welsh local authorities will additionally have access to the Urban Tracks and Paths Network (which will be licensed under the new Public Sector Mapping Agreement).
- £125 000 savings for Daventry each year since 2006.
- Wider savings delivered by all of the authorities in the Northamptonshire Waste Partnership.
- Reduced mileage and carbon footprint (with diesel costs down by 12%).
- A reduction in the number of routes: since 2009 Daventry’s waste collection has moved to a four day week (Tuesday to Friday), avoiding overtime and bank holiday Monday collections, which save an additional £200 000 per year).
- 14% increase in spare capacity, which has helped serve the growth in new properties.
- Informed evaluation of the impact of different collection methodologies; disposal locations and fleet requirements (for example, the use of smaller and more cost effective vehicles on certain routes).