In 2014–2015, the Transport Laboratory of the National Research Irkutsk State Technical University (TL-ISTU) participated in development of the Federal Methodological Guidelines "Quality Evaluation of Traffic Management". This article represents a number of suggestions in the framework of the document in development. As follows from the analysis of special periodicals and literature as well as considering the onrush of geoinformation technology, the following quantitative criteria have been chosen to assess reliability: time index, Herman–Prigogine criterion; buffer time. In this context, time index is offered to be used for comparative analysis of functioning reliability of transport systems in different cities. Based on these inspections (about 600 tracks in Irkutsk), rating scales of the chosen criteria have been offered