When driving the railroad arms will lower indicating a train is coming. However, the conductor will also alert drivers or passerby's by sounding the horn also.
I am not 100% sure but the railroad crossing sign.
A rail road crossing sing.
Vertical rectangle
You look at the sign before a number and that tells you what is to be done to the number that follows.
Advisory sign
[infinty sign]<x<[infinity sign]
It depends sometimes it can sometimes it doesn't.Normally if you look at the sign that tells you the prices when your on the road it should say contains ethanol.
A black and yellow circle that has a R on the right, and a R on the left with an X in the center of the circle. Page 5-18 let me guess you are doing your 84 question assignment!
A stop sign.
yield sign
An 'S' sign.
The only fact available is if he tells you he's gay. Otherwise, there is no way to know.