{"data":{"id":"us-md/md.-code-transportation-21-1412","jurisdiction":"us-md","citation":"Md. Code, Transportation § 21–1412","heading":"","body":"(a) Except at the direction of authorized personnel, vehicular traffic may not cross the double white lines that designate the vehicular traffic lanes in a tunnel.\n(b) Except at the direction of authorized personnel, trucks and slow moving vehicles may be driven only in the right lane of a tunnel.\n(c) The driver of a vehicle may not sound his horn or flash his headlights in a tunnel.\n(d) While in a tunnel, a person may not use any cutout or other device that allows exhaust gases to escape a motor without passing through a muffler or silencer.","path":["Article - Transportation"],"source_url":"https://mgaleg.maryland.gov/mgawebsite/Laws/StatuteText?article=gtr\u0026section=21-1412","current_through":"2026-01-01","vintage":"","retrieved_at":"2026-09-14T20:01:38Z","sha256":"36ba97ac033dd8c0f450dad7c9a54f844ddadf21a565de354d344ad1a01d7ebb","source_id":"us-md","stale":false,"prev":"us-md/md.-code-transportation-21-1411","next":"us-md/md.-code-transportation-21-1413"},"notice":"GroundRules: Original legal text. Not legal advice."}