| Description: | |||
|---|---|---|---|
| A request for additional information or a control command issued by the emergency response agency in response to an emergency request for assistance from a traveler. | |||
| Communications Standards: | |||
| No Communications Standards | |||
| Message Standards: | |||
| Mayday | SAE J2540 | Messages for Handling Strings and Look-Up Tables in ATIS Standards | SAE J2540 |
| Mayday | SAE J2540-1 | RDS (Radio Data System) Phrase Lists | SAE J2540/1 |
| Mayday | SAE J2540-2 | ITIS (International Traveler Information Systems) Phrase Lists | SAE J2540/2 |
| Mayday | SAE J2540-3 | National Names Phrase List | SAE J2540/3 |
| Mayday | SAE-J2313 | On-Board Land Vehicle Mayday Reporting Interface | SAE J2313 |
| Mayday | SAE-J2354 | Message Set for Advanced Traveler Information System (ATIS) | SAE J2354 |
| Data Standards: | |||
| No Data Standards | |||