How to get all intersections between two simple polygons in O(n+k?

If we have four traffic lights, in four intersections, how much time???

  • Ok now im asking this because in doha we have two things, Trraffic lights and Round Abouts (Lots of them) so i was thinking since i get caught in traffic a lot... 1- We have Four traffic lights in 4 intersections (A +A1), (B+B1), (C+C1) and (D+D1) A You go Straight and A1 you go left, B you go straight and B1 you go right and so on... 1- So if (A+A1) starts first and then stops then (B+B1) the (C+C1) then (D+D1) and so on how much time will it take 2- And if A + B will go together then A1 + B1 , and C+D then C1+D1 and so on... how much time will it take?? Which is faster Number 1 or 2?? which is more effective??? Do you understand me, im sure you have four intersections with traffic lights :D

  • Answer:

    A=Staright B=Straight A1=Left B1=Right U didnt say whats C+C1 Or D+D1? Are u trying to say (C+C1) is like the A's? And (D+D1) are like the Bs? if so then this is my solution! 1.We are driving: (A+A1)=Straight then left (B+B1)=Straight the right (C+C1)=Straight then left (D+D1)+Straight then right (Complicated driving) 2.We are driving: A+B=Straight +Straight=Extra speed A1+B1=Left +Right C+D=Straight+Straight=Exra speed C1+D1=Left +right The faster is number 2,we get to drive extar speed on free ways!! While num 1,we get to only drive staright and take a turn....and so on! More effective is 1 and complicated!! I hope im making sense here,cuz i have no freakin idea what the hell im talking about! haha

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Other answers

Just go when the light is green...we don't have this problem in Lebanon...smiling

Kate

the best way to take is the one that has the less traffic lights...i live in doha as well and know certain ways that help u escape the traffic, for instance if ur going from Handasa street :) to corniche, the best way to take is jida roundabout and then u go str8 until u get to bowling roundabout and from there u take right, there will be no traffic lights until u get to corniche :):):):) LOLLLLLLLLLLL

Corleone...

Life, what is this? too confusing.lmao.

violet

get in the pick up and follow the taxi. no get in the taxi and ask the pick up to follow you.

webby

The fastest one is A +A1), (B+B1), (C+C1) and (D+D1) for a 4 traffic intersections. But round abouts are the fastest way if you have 4 intersections.

G Bone

it depends on the setting of the timings for each individual situations. there r studies done to determine the movement of trafic and the time required for free flow at all directions. but the round circle is usually the same which ever way u do . discuss this further ? too much detail will bore every one here

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