The thesis is focused on mapping the up-to-date progress of urban and rural roads vertical alignment calculation, including verification of valid metodology and subsequent comparison with calculations already performed. Aim of the thesis is to highlight possible incorrect procedures within the computations listed in standards, and explain their inappropriateness concerning particular designs. The study should result not just in the optimalization of computing metodology (especially for crest vertical curves), but also in adjustment of the table containing the smallest radiuses of these vertical curves.