Geosynthetics in Transportation
<http://www.gsi-courses.org/transinfo.html>
GIS Technology
<http://www.gis.bcit.ca/online.shtm>
Institute of Transportation Engineers
<http://www.ite.org/onlinelearning>
Smart Pros
<http://engineering.smartpros.com>
Swinburne
<http://www.swin.edu.au/cwis/home/imc12/distance.htm> | 
