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Fire lanes may be any width larger than 20 feet (6.1m) across. This gives enough room to maneuver the truck into position. They must also be at least ten feet away from any building or structure overhang to allow overhead clearance. If trees are near a fire lane, they must be trimmed to allow a 14-foot (4.25m) clearance over the fire lane. [1]
Minimum lane width: The minimum lane width is 12 feet (3.7 m), identical to most US and state highways. Shoulder width: The minimum width of the left paved shoulder is 4 feet (1.2 m), and of the right paved shoulder 10 feet (3.0 m). With three or more lanes in each direction, both shoulders are to be at least 10 feet (3.0 m) wide.
For example, during the Cedar Fire of 2003, strong Santa Ana winds had blown enough burning embers across a 10-lane section of Interstate 15 to ignite the vegetation on the other side. [3] During the 1988 fires in Yellowstone National Park , hot embers managed to cross the Lewis Canyon , a natural canyon up to a mile wide and 600 feet (180 m) deep.
The 11th edition of the MUTCD was released on December 19, 2023. [1] The effective date, 30 days after publication, of the MUTCD was January 18, 2024.
An emergency access route was already opened in October for several area schools, running about 2.5 miles from the Lahainaluna fire lane to the Lahaina Bypass, Gov. Josh Green's office said.
In the United States, the Interstate Highway standards for the Interstate Highway System use a 12 ft (3.7 m) standard lane width, while narrower lanes are used on lower classification roads. In Europe, laws and road widths vary by country; the minimum widths of lanes are generally between 2.5 to 3.25 m (8.2 to 10.7 ft). [13]
The selection of lane width affects the safety, maximum capacity, and cost, of a highway. Safety is best at a width of 3.0 to 3.1 metres (9.8 to 10.2 ft) in urban settings, where both narrow (less than 2.8 metres (9 ft 2 in)) and wide (over 3.1 metres (10 ft)) lanes have higher crash risks.
Enjoy a classic game of Hearts and watch out for the Queen of Spades!