We have point features representing location of signs along a highway. For each sign we need to determine the distance of offset from the highway. We also need to know if the sign is to the left or right of the road with respect to the direction of the linear geometry direction (digitized direction).
This technical paper provides an advanced yet detailed workflow for determining the relative left / right offset of points along a linear network. The workflow utilizes the Accumulate Nearest, Aggregation Spatial operator. When reviewing the workflow document you are encouraged to download the example data to perform the labs.