This metric is based on the Global Reporting Initiative (GRI) G4 Sector Supplement - Event Organizers. It covers one of the reporting requirements of Indicator G4-EO2 - 'Modes of transport taken by attendees as a percentage of total transportation, and initiatives to encourage the use of sustainable transport options.'

Attendee transport is often an event’s largest environmental impact. Reporting the proportion of different transport modes used can help to define the impacts of the event, provide an overview of the uptake of more sustainable transport options, and identify opportunities for future improvement.

In some event locations, certain transport modes may not be available or appropriate for all attendees. Contextual information should be provided that explains the local transport situation, including the availability of public transport options and the suitability of these options for event attendees.

In many instances, event organizers will not have direct control over how attendees travel to and from the event. Reporting contextual information would be helpful to explain the level control and influence on attendee behavior, along with the boundary of control and influence that the event organizer has over the transport mode options available.

Refer to EO11 for reporting on number, type and impact of sustainability initiatives designed to raise awareness, share knowledge and impact behavior change and results achieved.