Humans are an integral part of the nature and to avoid imbalance, the impact of technology on the surrounding environment should be limited. Therefore, green technologies are becoming an important part of economy, politics and science. One of the largest sources of pollution are motorized vehicles, that account for around 14 % of the global greenhouse gas emissions [1]. Use of green transportation within the integrated multimodal transport system is important to minimize carbon emissions [2]. One of these means of transportation is cycling. For cycling to become a fully integrated element within a multimodal transport system and not just a type of tourism, an appropriate infrastructure is necessary – cycling routes, lighting, bike rental, parking, repair services, as well as alignment with other types of transport. Cyclists need route planning tools, information about road surface quality, relief, and usage patterns during different weather conditions and over different days of the week. Infrastructure development projects demand significant financial resources and therefore municipalities need sustainable tools for services design and management. In this article the authors discuss acceptance and sustainability assessment methodology IASAM use to validate the VeloRouter - cycling network designing technology.