Key facts
Code summary
Code 4210
Official title Construction of roads and railways
Version PSIC 2019
Source layer PSA / BSP
Section F - Construction
Cn
PSIC 2019 Navigation-first hub Class 4210 - Construction of roads and railways
PSIC Class 4210 covers Construction of roads and railways. Current child subclasses include Construction of Roads and Railways. This four-digit layer is useful when comparing neighboring activities before landing on the...
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Child codes
These are the next codes most users should open after this hub page.
About this level
Practical summary
Class 4210 sits in the PSIC 2019 hierarchy under F Construction > 42 Civil Engineering > 421 Construction of roads and railways. This class usually fans out into more specific subclasses such as Construction of Roads and Railways. It is the level people use when they already know the activity family but still need the exact five-digit match.
Administrative context
Where this code is used
This class is used when a business can already narrow the activity family and only needs to compare the final subclasses such as Construction of Roads and Railways. It is the level most often checked before a five-digit decision is finalized.
Selection note
How to choose it
Use this class to choose between its final subclasses such as Construction of Roads and Railways. If two options look close, compare the exact activity, the outputs and the way the business actually earns revenue.
Official note
Source-backed description
This class includes: Construction of motorways, streets, roads, other vehicular and pedestrian ways Surface work on streets, roads, highways, bridges or tunnels: asphalt paving of roads; road painting and other marking; installation of crash barriers, traffic signs and the like Construction of bridges, including those for elevated highways Construction of tunnels Construction of railways and subways Construction of airfield runways This class excludes: Installation of street lighting and electrical signals, see 4321; Architectural and engineering activities, see 7110; Project management activities related to civil engineering works, see 7110.
FAQ
What does PSIC Class 4210 cover?
PSIC Class 4210 is the four-digit layer that sits just above the final subclasses and usually defines the activity family for Construction of roads and railways.
How do I compare Class 4210 with the sibling classes?
Read the neighboring classes and compare the exact wording of the child subclasses. Nearby options include nearby sibling codes.
Why does Class 4210 matter for a filing decision?
It is usually the last broad checkpoint before the five-digit subclass choice, so it is the right place to catch near-miss classifications.