Under Article 81 of the Implementation Regulations, when driving on an expressway and visibility is LESS THAN 200 METERS due to fog, rain, or snow, what are the speed, distance, and lighting requirements?

1. Speed must not exceed 60 km/h, maintain a following distance of at least 100 meters, and turn on fog lights, low beams, clearance lamps, and tail lamps
2. Speed must not exceed 100 km/h, maintain 50 meters distance, and use high beams
3. Speed must not exceed 80 km/h, maintain 30 meters distance, and activate hazard flashers only
4. Speed must not exceed 40 km/h, maintain 20 meters distance, and stop in the travel lane