The phrase "are in effect" is commonly used to express that something is currently in operation or having an impact. When seeking synonyms for this phrase, several options come to mind. For example, "in operation" conveys the same idea in a slightly more succinct manner. Similarly, "in force" paints a picture of something being actively enforced or upheld. You could also use the phrase "in action" to suggest that something has had a tangible effect on its surroundings. Other possibilities include "in use," "active," "operative," or "effectual." These synonyms all serve to communicate the same basic idea and can be used interchangeably depending on the context.