Defining the light-technical parameters and applying the recommended measuring methods for creating the smart crossingsVarjas, Toivo; Möller, Taavi; Rosin, Argo17th International Symposium “Topical Problems in the Field of Electrical and Power Engineering”. Doctoral school of energy and geotechnology. III : Kuressaare, Estonia, January 15-20, 20182018 / p. 111-113 : ill http://ise.elnet.ee/record=b2950028~S2*est