Transportation Engineering

Transportation engineering is covered here mainly by online tools from US agencies: pavement structure design in asphalt and concrete, speed limit setting by a documented methodology, and coordinate conversion for field work.

Alongside them are traffic and transport system simulators that let you test signals, junctions and demand scenarios before changing anything on the ground. These originate in research but are used in practice for traffic planning.

As elsewhere on this site, the design methods and data are American. They are excellent for learning the method and estimating magnitude, and require adaptation to local standards before use in an approved design.