Critical for legal and technical clarity. Terms like "limited access highway" and "tunnel ventilation system" are precisely defined.
This tiered approach ensures that the cost and complexity of safety systems are proportional to the risk and difficulty of evacuation. Critical for legal and technical clarity
Search for “maximum travel distance.” Using the PDF, you find that for a tunnel without a sidewalk, emergency exits must be no more than 250 m apart. Your design will include a cross-passage every 200 m. Critical for legal and technical clarity