The width of this two way street, which has functioned perfectly well since 1908, is now considered too narrow to act as ~solely~ a one way fire lane for access to even a single building by todayβs NFPA code. βFor safetyβ
In reality this illegal street design is safer for everyone involved and means fewer accidents for fire department to respond to, and less severe injuries when they do.
To build this neighborhood today you would be told to remove the trees as an βobstacleβ, replacing that space with more asphalt instead. More people would be injured or killed, but in the much rarer case of a fire the convenience of added working space is considered more important.
In 1996 the allowed width of an urban street with curbside parking was 28β. Two lanes of travel, 18β of clear width to setup an engine or ladder.
~2000 the NFPA began to engage in traffic engineering, creating a 20β clear requirement. One way or not, doesnβt matter. 20β.
Today it is a default of 26β for an urban street or even a pull along fire lane, even if one way. 28 is common for urban βarterialsβ.
Over 30 years we increased the minimum width deemed βsafeβ for fire response by 44%.
We mandated excess asphalt in every new urban street and development across the country, foregoing sidewalks and bike lanes for wider, faster access.
We gained no statistical improvement in deaths per fire from this. We did gain significant increases in traffic and pedestrian deaths as these standards became ubiquitous in every new or βimprovedβ urban street design.