METHOD OF DETERMINING OPTIMUM ROUTE AND DEVICE Russian patent published in 2013 - IPC G08G1/00 G01C21/34 

FIELD: physics.

SUBSTANCE: map of the controlled road network is formed; each traffic section is assigned a speed index; up-to-date information is received from fixed sensors on traffic speed on sections of the road network and based on this information, speed indices are corrected; on all sections of the road network, for which there was correction of speed indices based on up-to-date information, the average speed V_a is calculated without taking into account the correction as well as the average speed V_b, for each section of the road network for which there was no correction of the speed index based on up-to-date information; the speed index is corrected by multiplying the speed index of each section of the road network by a function K_a(x) of the ratio X; data on the current location of the subscriber and the final point of the route are obtained and the optimum route is calculated.

EFFECT: high degree of optimality of the constructed route, shorter average time for completing a route in heavy traffic conditions.

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