The meaning of jam / jammed in dream | Dream Interpretation
If a door or machine is jammed we recognize that there may be spiritual obstacles ahead of us.
Psychological / emotional perspective: To be in a traffic jam suggests that other people’s concerns may be, or seem to be, more important than our own.
Material aspects: If we have caused the jam – that is, stopped the movement or flow – we must work out what is causing the difficulty and take avoiding action. Jam as a fruit conserve (a mixture of fruit and sugar) suggests that only by blending the components of a project can we come up with something fresh and new.