Peco introduced flexible ready to run many years ago, a step which transformed the ability of modellers to produce a fairly accurate representation of finescale trackwork. good quality pointwork was available for many years, complimented by a crossing and a double slip.
Other manufacturers such as C&L Finescale have offered flexible ready to lay track, and Marcway offer ready made track to your design as well as a range of off the shelf points and complex track arrangements.