Fuel surcharge. DPD levies a variable fuel surcharge on all road and air transportation services. This surcharge is shown separately on the same invoice as the transportation services. Fuel surcharge Products & Services All DPD CLASSIC (Road) DPD GUARANTEE DPD CLASSIC (Air) DPD EXPRESS Month / Year National (Road) International (Road) International (Air) December 2011 7% 7% 16% January 2012 8% 8% 17% February 2012 8% 8% 16% March 2012 8% 8% 16% April 2012 8% 8% 17% May 2012 8% 8% 17% June 2012       July 2012       August 2012       September 2012       October 2012       November 2012       December 2012       Basis of fuel surcharge for road products The fuel surcharge is calculated using the ASTAG model (based on CHF 1.20 / litre). The average price of diesel for the previous month is applied to the following month. The fuel surcharge is published monthly. The ASTAG index (based on CHF 1.20 / litre) can be downloaded from www.astag.ch. Basis of fuel surcharge for air products The fuel surcharge for international air transport services is calculated and published every month on the basis of the price of kerosene.