Road Symbols in Autocad

Can someone direct me what program to purchase or how to write a macro
or lisp that would create a road symbol? I have written macros in
Excel, but never in AutoCAD. I want to draw a line and then have
autocad turn that line into a road symbol. Road symbols are two
parellel lines with solid dashes between the two lines. A picture of
this is at this line.

http://www.b4us.net/images/topomapsymbols/pages/5. Road Symbols.html

The symbol I want is called secondary highway, hard surface in that
link.

Thank you very much.

 

RRL.LSP from
http://www.turvill.com/t2/free_stuff
may be close to what you're looking for.
___

 

Hi Paul,

your LISP works like a charme, but please a little correction for the users
of localized AutoCAD versions:
Change the line
(command ...
"_.chprop" ent "" "_lt" "acad_iso03w100" "s" LTS ""
)
to
(command ...
"_.chprop" ent "" "_lt" "acad_iso03w100" "_s" LTS ""
)

(Add a leading underscore to the option "s")

Thank you.

Juergen

 

N..