Urban traffic serves man. At all times, however, its technical formation has been connected with annoyances, and its development in our century verges on hostility towards life. Ways may be shown which, it’s true, will not create a sound world but will humanize urban traffic to a large extent. In this connection there is no ready-made solution. A number of measures prepared by the civil engineer for city planning must be purposefully realized. In this connection the idea of ‘environment’ formulated by Buchanan in London may be the basis for development. ‘Environment’ means a traffic- appeased and traffic-pacified city unit which is developed to be fit for human beings and ecologically beneficial. A street concept graded to functions is practical; planning principles for public urban transportation are com- plementary. From human needs mobility claims will arise which will be quantified. Natural patterns of behavior (principle of least resistance) will form the traffic image in the town. A humane town planning must allow for this human attitude towards the overcoming of areas which is also subject to human errors (such as errors of estimation). On the other hand, traffic resulting from the mobility claim is felt to be disturbing with regard to living and working especially since the citizen rapidly becomes more and mo. re sensitive to noise. Traffic separations and traffic pacification are required. Only the restoration of a sound psychological atmosphere in the adjacent roads of our towns will eventually result in humane traffic.