Southern California Institute of Architecture (SCI-Arc)
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How determine desired width of road?
Is there a law or code for determining the width of road depending on density of population or depending on number vehicles in vicinity?
In the US there are federal highway department standards, state requirements, and often local requirements too. In addition to the factors you noted, some other determinants are speed limits, number of lanes, specifics of local emergency vehicles' requirements, number of driveways along the road and distance apart, presence of heavy vehicles, and types of uses along the road. If this is for a real project you'd likely consult a civil engineer. I recall you are a student so you might just discuss the project with a local zoning administrator or other official in the project's theoretical location, for a ballpark size.
Thankyou very much.
Typical streets in the US are 12' Highway (per lane) 10' city streets (per lane) if there are just 2 lanes (2 way streets) with no median 12' per lane, 24' total is typical. Street parking (parallel parking) is typically 8-9'.
Over and OUT
Peter N
@introvert19
Assuming you are in the States, you might have a look at AASHTO codes
most cities have this info in their zoning code.
There is a book "A policy on geometric design of highways and streets" by AASHTO - they cover road / lane widths, and they tend to be more universal
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