The light changes and your dog stops at the curb, body low and feet fixed. Traffic is close. The first job is to keep you both safe, not to teach a cue while the signal counts down. Wait for a safe opening, move away from the roadway if possible, and take a quieter route. Do not drag a frightened dog into traffic.
If the freeze is sudden, if your dog limps or seems weak, or if they cannot move normally after leaving the crossing, contact your veterinarian. Pain can make walking difficult, and noise or vehicle movement can also frighten a dog. A dog who freezes may react defensively if grabbed or forced.
Build a different crossing plan
Look for a wider crossing with better sightlines, less noise, or a place to wait farther from vehicles. Practice approaching the area at a calm time without crossing. Reward your dog for voluntarily moving with you while they remain comfortable, then turn back. You are teaching that they can leave, not that they must push through the loudest part of the road.
Teach an easy "this way" turn on quiet paths. If your dog freezes before you reach the curb, use that cue to move away. If it is not safe to practice near traffic, get hands-on help from a qualified, reward-based behavior professional to set up a plan elsewhere. The right crossing is one your dog can make without panic and you can manage without a tug-of-war against the light. Once you have a quiet route and a safe way around the crossing, the safe leash-walking guide can help with lead skills away from traffic. Never practice by pulling a frozen dog into the road.
Sources: Vetstreet: Why Does My Dog Freeze During Our Walk?. VCA Animal Hospitals: Fear of Noises in Dogs.