In the U.K. and Ireland, where we directly manage our logistics, we believe we are at the forefront of innovation in our logistics fleet. We collaborate with our transport providers and incorporate a "green" clause in our agreements, which covers both trucking and store delivery vehicles and commits both parties to achieving key environmental goals. Together with our partners, we continually work on new ideas to increase fuel efficiency and reduce costs, thereby minimizing the impact of our vehicles on the environment. In fact, we estimate that we saved over 1.3 million kilometers of truck travel over 2017 by being more efficient.
Through our logistics partners, we work with trailer manufacturers to develop innovative designs for our vehicles. Our whole fleet is now comprised of newer lifting deck trailers built for T.K. Maxx, which represent the latest in trailer solutions and offer better durability, more cubic space, aerodynamic profiling, and a host of safety features. We are also using low-rolling resistance tires on new double deck trailers.
In addition to our existing fleet enhancements, we encourage our logistics partners to pilot hybrid vehicles, and we leverage technology and design to improve logistics efficiency. We are introducing driving-style management applications to provide fuel savings and currently testing 100% liquefied natural gas trucks in London.
We continue to utilize dual-fueled vehicles (liquefied petroleum gas and diesel) within our fleet to reduce our GHG emissions. We take steps to increase the utilization of our vehicles and to help manage delivery routes more efficiently. We also offer driver education and invest in technologies like vehicle tracking that can help optimize driving habits to reduce fuel costs, improve safety, and ensure efficient routes.
We also collaborate with other retailers in the U.K. to share capacity on some of our delivery routes. This collaborative approach can eliminate the need for multiple, parallel trips to the same location, helping to further reduce GHG emissions.
Outside of the U.K. and Ireland, we continue to work with our logistics providers to introduce a new double deck trailer for use across other parts of Europe. We are currently trialing two double deck trailers for transport of products between Poland and Germany. These trailers are designed to increase cubic capacity and deliver improved aerodynamics.
Altogether, we estimate that our emissions reductions from our European logistics initiatives was 1,300 metric tons of CO2e.