Taximeter verification with GPS and soft computing techniques

Until recently, local governments in Spain were using machines with rolling cylinders for verifying taximeters. However, the condition of the tires can lead to errors in the process and the mechanical construction of the test equipment is not compatible with certain vehicles. Thus, a new measurement device needs to be designed. In our opinion, the verification of a taximeter will not be reliable unless measurements taken on an actual taxi run are used. GPS sensors are intuitively well suited for this process, because they provide the position and the speed with independence of those car devices that are under test. But there are legal problems that make difficult the use of GPSbased sensors: GPS coordinate measurements do not match exactly real coordinates and, generally speaking, we are not given absolute tolerances. We can not know whether the maximum error is always lower than, for example, 7 m. However, we might know that 50% of the measurements lie on a circle with a radius of 7 m...

• Type: Journal
• Year: 2010
• Where: SOCO
• Authors: José Villar, Adolfo Otero, José Otero, Luciano Sánchez
• Keywords: Fuzzy Systems, Legal Problems, Measurements, SOCO 2010, Software Engineering