Abstract
Integral approach in bus development in the light of very severe European standards is used in the development phase of bus B3 090. There were developed different types of busses named B3 090 as follows: city, liner or inter city and tourist with emphasis to new look (design), new motorization-engine EURO3 and quality solution in system suspension and brake that were especially stresses in development phase fig. 1.
Development and implementation electro informatics system for monitoring working function of buses, diagnostic and self-diagnostic was the second significant task. The main subject was optimal functioning all bus systems and security of drivers and passengers. It is reason that was installed electronic modulo CAN especially developed for cars industry that entirely supported appointed function.