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Data samples have been posted to assist users with accessing and understanding the data elements included in over-the-air MAP and SPaT messages. The Intersection Description (nmap) File is the input to generate the over-the-air MAP messages. Please see nmap file spec for the format of the Intersection Description File. For MAP and SPaT payload, each PDF file contains the message payload in Hex and the validation result by using USDOT Connected Vehicles Message Validator. Sample of BSM payload and SRM payload are also provided as reference.

Data Sample
Cross-Street NameIntersection Description (nmap) FileMAP Payload (size in bytes)SPaT Payload (size in bytes)
Stanford Ave nmap payload (757) payload (114)
Cambridge Ave nmap payload (749) payload (114)
S California Ave nmap payload (844) payload (134)
Page Mill Rd nmap payload (1153) payload (134)
Portage/Hansen nmap payload (855) payload (114)
Matadero Ave nmap payload (763) payload (105)
Curtner Ave nmap payload (543) payload (76)
Ventura Ave nmap payload (568) payload (105)
Los Robles Ave nmap payload (1002) payload (134)
Maybell Ave nmap payload (844) payload (134)
W Charleston Ave nmap payload (1145) payload (130)