Why not?---my turn
ASDA: distance to accelerate to the decision speed V1 and then stop---unfactored
stopway: a length of usable surface not designated a runway i.e the 'chevron' area that will not cause significant damage to the plane
clearway: an obstacle free area [like water or a field or rusty nails] over which a portion of the OEI acceleration section to the screen/ fence [first segment] to V2 may be allowed
ASDA =accelerate stop distance =TORA + stopway
TORA=Takeoff runway the aircraft must be airborne at V2 [for the accelerate-go] at 35' above the end of the TORA with one engine inoperative: for all engines the FAR TORA includes a safety factor of [half the airborne distance to 35' plus 15%
TORA+CLEARWAY = TODA
'sometimes the distance TORA or TODA must be reduced to account for LOW CLOSE IN OBSTACLES affecting the accelerate-go'
so
1. b
2. c
yes, ASD [FAA] = ASD [CAA]
but in the US TORA=TODA=ASDA
[this is going to change if it already hasn't in the US]