Abstract
Accessibility model, accessibility research in Czech Republic. The article deals with accessibility of individual car transportation.
It uses the GIS approach to focus on development of an accessibility model and on three main related issues: digital model of road network, factors influencing average speed and discussion on average speed. Two digital models were done for the territory of Czechia for the years of 1991 and 2001 censi, Le. before and after the transformation.
The aim is to find out what changes occurred during the transformation and to use them in other geographical analyses. Two. maps with isochronic surfaces are enclosed to demonstrate the functionality of the models.