Vehicle onboard travel planning systems have been developed inrecent years. Since the development of GPS-based devices equipped with digitalmapping applications for many vehicles, route planning has become easier andmore convenient for drivers. Although such systems are used by drivers, fordelivery or courier companies, it is especially important to provide a high-qualityservice, which involves the timely delivery of goods. Traffic managementauthorities are also interested in acquiring data on road and traffic conditions toverify the effectiveness and smoothness of the flow of vehicles. This paperproposes a method for traffic data collection and an application for recording dataof variable factors having impact on a vehicle speed in cities and agglomerations.Data acquisition and identification of factors having impact on reduction ofvehicle speed in the cities has been presented for a case study of Gliwice. Theresults can be useful for traffic management authorities, municipal traffic, roadplanning departments and mobile apps designers.
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