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From: res@ihuxn.UUCP (Rich Strebendt)
Newsgroups: net.travel,net.auto
Subject: Re: Road sign query
Message-ID: <825@ihuxn.UUCP>
Date: Fri, 7-Sep-84 16:09:38 EDT
Article-I.D.: ihuxn.825
Posted: Fri Sep  7 16:09:38 1984
Date-Received: Wed, 12-Sep-84 03:07:03 EDT
References: <551@ihlts.UUCP>
Organization: AT&T Bell Labs, Naperville, IL
Lines: 14

In reply to:

| My question is: what the hell does "7% GRADE" mean?! 7% of what? 

The %grade of a road or of a railway is simply 

   100 * (rise or fall)/(run)  

That is, a 1% grade is a 1 foot rise or fall in 100 feet.  For
comparison, a 2% grade on a railroad is a rather steep grade.  For a
road, the %-grade allowed is quite a bit higher than for a railroad.

					Rich Strebendt
					...!ihnp4!ihuxn!res