Poznań as an important city is appealing to new residents and can offer opportunities to education, personal and family development and to find an interesting career. However, majority of incoming people choose suburbs or suburban counties as a place of residence, making their dreams about a house with a back garden come true. Unfortunately, one of the trade-offs of having a house outside of the city is associated with longer commuting to work or school on daily basis, which takes time and energy. Daily traffic between the city and neighbouring counties contributes heavily to overall traffic congestion and availability of parking spaces in the city. The article’s goal is to assess the effectiveness of the city’s parking policy and program documents, which set the development direction or evolution of the city in relation to parking spaces. My thesis consists of reasons for the traffic congestion of Poznań, review of the basic actions aimed at freeing the busiest car parks in the city centre and research based on a survey of car users using urban spaces, which aimed to show whether the relevant program assumptions have influence over the transport behaviour of drivers.