You boys have fun down the pub don't you!!!! Try CAP168 Chapter 4 (The Assesment and treatment of obstacles). 12.1 Lighting of vehicles. This gives a reference to Chapter 6 Appendix A table 6A.1. Which also refers. I didn't check it I'm afraid cos I find CAP168 has strange hypnotic powers! Every time I look at it I wake up hours later with my cheek covered in drool!!!!
Spiney