Cyclist Rebekka Meyer's foot may have slipped off her bike pedal as she attempted to depart an inner Brisbane intersection, seconds before she was hit and killed by a truck last year.

On day two of the coronial inquest into the young University of Queensland student's death, two pedestrians who witnessed the horror collision that claimed her life testified she appeared to struggle to gain momentum when a green light gave her and the truck she was waiting alongside the signal to turn from Stanley Street into Annerley Road on the morning of September 11, 2014.

According to witnesses, the truck clipped the back tyre of the Danish national's bike, flinging it into oncoming traffic and causing her to fall under the truck and subsequently, under the rear tyres.