In this paper state of Poznan's bike traffic quality is presented. First a discussion is made about bicycle infrastructure. The infrastructure is divided into 4 categories, separately presented are bicycle stands and bike traffic outside bike routes.

Bike routes in Poznan have a summary length of 32,4 km (summer of 2001). 4,7 km are fully separated from other users and attractive to cyclists. 7,6 km are separated only by proper signs - they provide good quality of bicycle traffic if not blocked by parking cars or used by cars or pedestrians. A majority of bike routes are paths used by both pedestrians and bicycles - some have good bike conditions due to a minimal pedestrian use, other should be considered as temporary with a planned construction of a separate path. Presented are also examples of interesting projects (among others a "left-side (English) bike route") and of poor design.

Quality of construction and technical state of Poznan's bike routes is also shown, with a spectrum from proper quality through poor pavement state (due to pavement age or destruction by cars) to different object put on the route making the route harder or impossible to use.

A separate topic concerns bicycles outside bicycle infrastructure - important for Poznan since, due to small amount of bike paths, that is where most of bicycle travel is done. Problems arise from high speed of cars, passing without a proper side gap (smaller than the law allows), one way streets without lanes for bicycles moving in opposite directions and intelligent traffic lights unable to notice bicycles (on some junctions the traffic light programs are not in accordance with the traffic light instruction). On the other hand many cyclists break the law using pedestrian ways. While bike safety on streets is a significant argument, some of them forget that they also pose a danger for pedestrians. A bike riding a pedestrian way along a bike path or other safe route (for example 20 km/h speed limit zone) can also be seen. On the streets some cyclists evade the law, most dangerous are riding without lights at night and passing through red light.

Bicycle traffic in Poznan has a high sociological potential to rise; the rise is however blocked by inadequate bike infrastructure and safety. The extension of the infrastructure is blocked by financial problems, but also by some politics and administrators. Another factor is design and construction quality, sometimes not providing expected traffic quality, or even worsening it.