Estimation of actual conditions of a roadway segment by weighting roadway condition data with the quality of the roadway condition data

摘要

Actual conditions of a roadway segment are estimated by providing roadway condition data to a processor for the roadway segment from a plurality of different types of sources of the roadway condition data, assigning a quality to each of the plurality of different types of sources of the roadway condition data, and estimating in the processor the actual conditions of the roadway segment by using the roadway condition data and the quality of each of the plurality of different types of sources of the roadway data. The quality determines weightings given to each of the plurality of different types of sources.

主权项

1. A computer-implemented method of estimating actual conditions of a roadway segment embodied on a non-transitory computer readable medium, the method comprising:
providing roadway condition data to a processor for a plurality of data points along the roadway segment from a plurality of different sources of the roadway condition data, wherein the plurality of different sources are organized by source types, wherein a hierarchy defines which type of source is used for estimating actual conditions when data from the type of source is available, and wherein the hierarchy has an order of (i) real-time data, (ii) incident data, and (iii) historical data; assigning a weight function to each source of the real-time data and the incident data, wherein the weight function is based on quality of the data provided by the source; and estimating in the processor the actual conditions for each of the data points of the roadway segment by using the roadway condition data from only the type of source defined by the hierarchy, wherein if the real-time data or the incident data are used to estimate the actual conditions, the processor calculates a weighted sum of the roadway condition data using the assigned weight functions.