Define Median Adjustments

This command prepares a road design for median transitions by picking a plan view polyline for the median alignment and then creating the road design files for a median for the Template Point Centerline (.tpc) and Template Series File (.tsf).

Before running this command, draw a polyline for the median in plan view. The road centerline must cross through the median as shown here.
Also before running this command, use Design Template to make two template files (TPL) where one template has the median and the other is without the median. In the example shown here, this template has the median with the grade of MED and the curb. The template without the median in this example does not have the MED grade and curb.
In the dialog for this command, select the input files for the centerline and template with and without the median. Also set the grade ID from the template for the median.

Finally, after the dialog the program prompts to select the median polyline from the drawing. Then the output Template Series File will assign the median and non-median templates based on where the centerline crosses the median polyline. The output Template Point Centerline will assign centerlines for the median using the median polyline.

To apply the median design, run Process Road Design or Road Network and use the Template Series File (TSF) and Template Point Centerline (TPC) for the road design input.

Pulldown Menu Location: Roads
Keyboard Command: prep_median
Prerequisite: Centerline, templates and median polyline