A “part-time” lane on the right shoulder for southbound I-15 traffic began Sunday and will be open today. Motorists can use it between 10 a.m. and 8 p.m., according to Caltrans. Original article: https://www.reviewjournal.com/local/traffic/southbound-i-15-traffic-congested-but-no-major-holiday-backup-yet-2899003/