Create a Facebook event (include event logo) and invite all students within network if possible in advance of the day
On status pages of university and for student union, add event details
Promote event on Twitter of both SU President and other relevant student and staff officers (a week before and build up momentum to the event)

University intranet

Engage with students and staff through online university domain

Provide link on homepage to Green Travel site
Upload digital flyer/logo to section of homepage of both university and student union website

Develop Green Travel Day Site

Provide information before and beyond the Day

Develop webpage to allow students to ask Green Travel Questions
Include link to relevant sites for exhibitors and be informed before and after the day

Posters/Advertising

In advance - Flyer popular student/staff locations, such as the Street, lecture room hallways, the shuttle
Agree on number of flyers necessary to distribute around campus and arrange printing requirements
Recruit volunteers to flyer event information, both a week in advance and on the day
Digital screens - provide event information at digital screens throughout campus
Coordinate with marketing/digital liaison to upload event screens in advance and on day of the event
On the day - hand out "passports" at key locations to intercept/engage with students/staff and increase awareness.

Student Magazine/Newspaper

Article/feature - Beyond an advertisement in the student publication, look to provide an engaging piece that discusses the day and also Green Travel in general to provide a more lasting impact.