I love this video by Snuffy’s Cat Productions on the Malabar Job.  In particular, check out the use of fusee’s for the grade crossing at the 2:07 mark. LogicRail Technologies makes a nice fusee device that’s easy to install.  Modeling this safety procedure adds time to an op. session, effectively “stretching” the size of your layout.  It also does so in a way that doesn’t feel hokey or contrived.