Students and staff at the University of the West of England (UWE) have called for an improved transport service.
The protesters gathered at the UWE roundabout
The UWE Transport Action Network held a demonstration at the Frenchay campus in Bristol to protest about the lack of affordable buses services.
They were also protesting against the lack of adequate cycling and pedestrian facilities, massive university parking subsidies and high carbon emissions.
A UWE spokesperson said it was taking steps to improve its transport system.
Student Lewis Winks said: "Students and lecturers have waited an hour in the rain for a bus that never comes. If it does come, often it is too crowded or stuck in traffic."
The protesters gathered at the UWE roundabout and were set to embark on a mass cycle ride at 1730 GMT.
Jezz Evans, said: "This kind of action is needed to get people to reconsider the impact their transport has on both local quality of life and global climate change.
"Individuals need to re-consider their lifestyles if we are to have any hope of a stable future on this planet."
The university has recently introduced 137 specially-reserved parking spaces as part of a scheme to help cut congestion on Bristol's major routes.