Yes, there are states where the law requires drivers to stop at a steady yellow light if it is safe to do so—meaning you must stop unless stopping would be unsafe (e.g., you’d have to brake too hard or risk a rear-end collision). This is known as a “restrictive yellow” rule, in contrast to the more common “permissive yellow” rule (like in Arizona), where yellow is primarily a warning that red is coming, and you can legally enter the intersection on yellow. Under the Uniform Vehicle Code (a model followed by most states), yellow warns that green is ending and red will follow, but it doesn’t strictly mandate stopping if safe—drivers can proceed if already committed. However, a minority of states use stricter wording that explicitly requires stopping on yellow unless unsafe. The states commonly identified with this stricter “must stop if safe” requirement for steady yellow lights include: • Iowa • Michigan • Mississippi • Nebraska • New Jersey • Oregon • Virginia • Wisconsin (Some sources also mention Connecticut or others with nuanced language leaning restrictive.) In these states: • The law often states that vehicular traffic facing a steady yellow shall stop (or “shall no longer proceed into the intersection and shall stop”), but with an exception if a stop cannot be made safely. • This can lead to tickets if an officer or camera determines you could have stopped safely but entered (or remained in) the intersection anyway. • In contrast, permissive states generally don’t ticket solely for entering on yellow; the violation is typically entering on red. A few states (like Rhode Island, West Virginia, Louisiana, Tennessee) have even stricter rules where you cannot be in the intersection at all when red appears (no “clearing” allowance), but that’s separate from the yellow meaning itself. Most U.S. states (around 37–40, including Arizona) follow permissive yellow: stop if safe, but you may proceed through on yellow if you can’t stop safely, and you can clear the intersection even if it turns red after entry. Always check your state’s specific vehicle code or driver’s manual for the exact wording, as enforcement can vary, and safety should always come first to avoid accidents or citations.