triquet wrote:Please correct me on this as I am a AD newbie, but as far as I am aware the limit point is at the opposite edge of the road i.e. on a LH it is defined by the RH verge, RH bend the LH verge i.e. if you're looking at the limit point you may be able to see a hedgehog in the gutter but there could easily be a car, truck, lorry, combine harvester or horse at that distance ahead but you won't actually see it. The road is NOT necessarily clear to the limit point and the tighter the bend the worse the discrepancy.
triquet wrote:... but there could easily be a car, truck, lorry, combine harvester or horse at that distance ahead but you won't actually see it. The road is NOT necessarily clear to the limit point and the tighter the bend the worse the discrepancy.
7db wrote:Usually the limit point is a fact of geometry - the furthest point on the road you can see. It's dominant in hazard assessment technique where the nearest hazard is the bend.
It's tempting to use an alternative definition - my particular favourite - "the nearest place a surprise can come from".
This makes the Golden Rule:-
Always drive so that you can stop before the nearest place a surprise can come from.
I assume that satisfies those who think the language was clumsy or unclear in the original version. I prefer the original for its emphasis on observation and thought.
7db wrote:Usually the limit point is a fact of geometry - the furthest point on the road you can see. It's dominant in hazard assessment technique where the nearest hazard is the bend.
It's tempting to use an alternative definition - my particular favourite - "the nearest place a surprise can come from".
This makes the Golden Rule:-
Always drive so that you can stop before the nearest place a surprise can come from.
I assume that satisfies those who think the language was clumsy or unclear in the original version. I prefer the original for its emphasis on observation and thought.
7db wrote:It's tempting to use an alternative definition - my particular favourite - "the nearest place a surprise can come from".
This makes the Golden Rule:-
Always drive so that you can stop before the nearest place a surprise can come from.
I assume that satisfies those who think the language was clumsy or unclear in the original version. I prefer the original for its emphasis on observation and thought.
triquet wrote:Horse wrote:http://roadarbloggers.wordpress.com/2011/03/18/corners-and-cornering/
Exactly. On a LH bend the true limit point is the LH side (which you can't see).
triquet wrote:as far as I am aware the limit point is at the opposite edge of the road i.e. on a LH it is defined by the RH verge, RH bend the LH verge
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