what is the significance of each traffic sign shape?
607131
signs are three types:\nwarning: triangle\nformal: rectangle\nprevention and allawance :circular\nthe stop sign has 8 sides to know even if you looked from the back of it
903332
I've figured out 2 of them so far:\n\n8= Arms on an Octopus\n5 = Tires on a Car (including Spare in Trunk)\n\nPS:  I do hope you will award Best Answers on these.  I've actually spent a lot of time trying to solve these puzzles.  They are fun, but challenging at times.
395542
the number of ur bulding and street name.
1178148
It is the section sign used generally in legal tomes.  It is associated with law and justice. I've seen it before, too.   Sometimes you see this on tickets when you are cited for a driving infraction. It tells you which section in the legal code you've managed to not follow.   Trying to find it without going over to the police department was a bit of a challenge.  (I live only a block and a half from the police station and hospital.  LOL!)\n\nI finally found it in Wikipedia by typing in ampersand.  Ampersand and tilde are the only names I know to the plethora of symbols out there.
136022
bermuda....\nyield sign...\n8-ball rack...\narrow head
877795
the " sign is usualy the sign for inches hope that helps
982385
Try here.\nhttp://www.stop-sign.com/contactus.php?pg=ss_di001&ver=online&n=d_ss_clk01&SV=si008
763709
tilde\nexclamation mark\ncross hatch\ndollar symbol\npercent sign\ncaret\nampersand\nasterisk\ncomma\nunderscore\ndash\nbracket\nellipse\nquestion mark
168569
The 'sign of the cross' THREE TIMES does have a general appearance of  writing "666" - verrrrrry interesting! But what does it mean?
707899
Hey U Gotta Perfectly Good Explanation, \nIts LIke The Sign That I Saw It Said "Right Turn: -  Must Turn Right"
1076251
It is never-ending, continuous.  It is a symbol of rebirth, of the turning of the seasons, of life.  There are many special things about the circle.  As a sphere, it is not as subject to the elements as other 3-D shapes.  Wind and water go right over or around it.
318179
The shape of things to come
669147
number of sides, congurency?, size of angles, distinguishing characteristics
237112
the cylinder shape and the contents.
481063
What is the shape of the lot?
785771
Here is what a narrow bridge sign looks like. What the driver is suppose to do when they see one is slow down. That way if there is not enough room for the driver to cross the bridge (example: Another vehicle coming from the other direction, driver's vehicle to wide, etc) then they will have time to stop.\n\nhttp://www.snapdrive.net/files/162497/136709497.jpg
970552
I googled "stop sign statistics", and a fine study came up at the top of the list.\n\nhttp://www.cis.ysu.edu/~chang/student_proj/S3743_s02/s3743s02KenAl.pdf