This probably wouldn't be quick, however if you're interested in modelling traffic paraphernalia to detail out your scene I've found most D.O.T. sites have a raft of standard details in CAD format for gantries, crash barriers, lamps etc.
http://www.dot.state.tx.us/business/standardplanfiles.htm
Example: ftp://ftp.dot.state.tx.us/pub/txdot-info/cmd/cserve/standard/traffic/stds66.pdf

Thanks.
I grouped the models like suggested. It helped in some cases so for that I am grateful.
Yes, I am using Zorro Version 2 rather than the previous one.
No problem re: the discussion. You guys were addressing two separate topics. Fortunately, I understood where you were both coming from. Get some rest.