High machinery
A sign that reads, highway intersection 1000ft means that in a 1000 feet, you will come upon this intersection. This signs are put along roads to inform drivers.
Watch for highway machinery Watch for cross traffic and traffic turning onto or off of the highway.
Tebin ahead
+ (a plus sign) is the symbol for an intersection.
The 2-way intersection sign indicates that you are approaching an intersection where traffic is coming from two directions.
Farm to market road
It means that people coming from all directions into the intersection have STOP signs, not just you.
how close to a stop sign, or an intersection can I park
That sign would be the stop sign, the 4-way sign tell you that at that intersection, 4 of the directions of travel through the intersection (including yours) have a stop sign.
The straight road you are on ends at a "T" intersection (road that goes right and left).
When approaching an intersection without a stop or yield sign, you are required to yield to any vehicles already in the intersection or approaching from your right.
letters don't specifically have a definition. 'H' means 'H'. if you mean when you drive on a highway and you see a sign that says 'H' it means hospital.