J_T,
I've done about 50% of my airport analyses in Australia, and haven't encountered ASDA>TODA, I'd appreciate your naming the one airport you found if you can recall it, just out of curiosity
ant1,
Thank you, I had not considered the lateral splay in the discussion. It does make sense that a reduced lateral splay could generate a suitable ASDA>TODA.
At least in the Australian environment excessively long CWY and SWY are merely bonuses for a safer operation, as RESA (Runway End Safety Area) comes into play and limits the amount of SWY and CWY which may be used. Frankly, I don't know if the FAR and JAR require the application of RESA, I've always applied the Australian RESA criteria for this consideration when working under these rules. (I love conservatism).
Regards,
Old Smokey