Soccer goals need to comply with the American Society of Testing and Materials (ASTM). The current standard regarding movable soccer goals is ASTM F2950-14. This standard applies to all soccer goals with a total weight greater than 40 lbs regardless of the size/dimensions of the goal. This standard specifies safety and performance requirements intended to provide safer soccer goals and thereby reduce injuries and fatalities.
Note: Several states have laws pertaining to movable soccer goals. Please check the laws in your state.