A sign that is too small, too close, or engineering-grade on a 100 km/h highway is legally installed and operationally useless. IRC:67 defines shape, colour and retroreflectivity class. Placement is a function of design speed, not of the nearest leftover pole.
Three families
Mandatory (must obey), cautionary (hazard ahead), informatory (where and how far). Mixing a warning triangle with a parking plate because “the client liked blue” is not a specification.
Sheeting
HIP or diamond grade on national highways; keep the grade on the challan so a night audit can be traced. Aluminium substrate and galvanised posts complete a durable assembly.
We fabricate and install, including gantry coordination with a structural consultant when the carriageway needs overhead legends. hello@psroadmarking.in