4. Appendix—How to Create an RSU MAP File
Objective
This procedure outlines the steps to produce an SAE J2735 compliant MAP file. J2735 messages are
encoded using unaligned packed encoding rules (UPER) when transmitted from the roadside unit based on
the 2016 standard's requirements. This procedure assumes that you are familiar with traffic control
terminology, intersection geometry and layout.
Material Requirements
• Windows PC with internet connection and web browser
• Customer intersection location
• Intersection diagram or equivalent
Map File Creation Procedure
1. Open the USDOT Connected Vehicles Tools website:
2. Click View Tool to open the ISD Message Creator.
3. Click File > New Parent Map to start a new parent map.
4. In the search bar, enter an address near the intersection location.
TrafficCast Quick Start—BlueTOAD Spectra and RSU
Revision 02 May 2019
https://webapp.connectedvcs.com/
4-1
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