RAC

Appendix

Research Methodology 'RAC Report on Motoring 2009' is based on a large-scale internet survey carried out by Quadrangle on behalf of RAC.

In total, Quadrangle interviewed 1,109 British motorists (i.e. those who hold a current driving licence and drive at least once a month). The survey was conducted in April 2009, with the questionnaire taking around 20 minutes to complete.

The sample wasnationally representative of age, gender, socio-economic groups, all GB regions and new car buyers. The number of company car drivers in the sample was boosted by an additional 65 to provide sufficient numbers for analysis of this group (resulting in a total of 105 company car drivers in the overall sample). The results were then post-weighted to represent national household car ownership.

Quoted costs

All costs quoted are motorists' estimates unless stated otherwise

Statistical reliability

Any figure taken from a sample can never be taken as a precise indication of the actual figures for the total population being sampled. The figures shown are an estimate, within a small margin of error, of the actual figures. The error margin varies with the sample size - the larger the sample is, the lower the error will be. It also varies with the proportions answering so the error is lower for a 90/10 result than for a 50/50 result.

In order to illustrate the use of varying sample sizes and their affect on the statistical significance of results, the table below outlines the degree of statistical error broadly associated with different

sample sizes. For example, from a sample of 1,000, if 50% answered in a particular way, we would be 95% confident that the true range is between 47% and 53%.

Sample size    Percentage
error 90/10   
Result
50/50 result   
2,000 +/-2 +/-3
1,000 +/-2 +/-3
800 +/-2 +/-3
600 +/-2 +/-4
400 +/-3 +/-5
200 +/-4 +/-7
100 +/-5 +/-10

About RAC

With around seven million members, RAC is one of the UK's most progressive motoring organisations, providing services for both private and business motorists. Whether it's roadside assistance, insurance, vehicle inspections and checks, legal services or up-to-the-minute traffic and travel information - RAC is able to meet motorists' needs.

RAC is committed to providing the very highest levels of service to its members and has been ranked first for customer service by J.D. Power and Associates' UK Roadside Assistance Study for the last three years.

Aviva bought RAC in May 2005. The acquisition brings together RAC's powerful brand and customer base with the expertise and leading position in motor insurance of Aviva UK Insurance (formerly Norwich Union Insurance). Aviva is the UK's largest insurer with a market share of around 15%.

RAC is part of Aviva, the world's fifth largest insurance group which operates in 28 countries.

RAC's news releases and a selection of images are available from the internet press centre at www.racnews.co.uk.

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