http://www.lcd.state.or.us/tgm/pdfs/Narrow%20streets%202001.pdf

http://www.placemakers.com/info/SCFW2004.pdf

http://www.lcd.state.or.us/tgm/pub/pdfs/neigh_st.PDF

http://www.roundabouts.net/roaddesign.html

http://www.bicyclinginfo.org/pdf/bike_lane.pdf

http://www.greenhouse.gov.au/yourhome/technical/fs61_4.htm

http://www.bicyclinginfo.org/de/bikelaneguide.htm