The company has research material, based on a database created from interviews with 40,000 people on more than 1,600 campaigns, which analyses how creative campaigns have performed on the street.
Using this data, Adshel can offer clients a gain or loss analysis. Wella's Vivality campaign scored additional media value of £160,000, with 80 per cent of the people surveyed rating it as easy to understand.
Moneygator.com scored poorly, with a corresponding loss of potential media value of £302,000.
Peugeot has put some of the research recommendations into practice, resulting in increased awareness levels.
Yvonne O'Brien, the marketing director of Clear Channel UK, Adshel's parent, said: "This tool means advertisers can see the financial implications of a creative before it hits the streets."