Titles and categories scraped by algorithm from on-line sources:

Pattern Number: 50

Pattern Title: T Junctions

Category: Towns

Sub-Category: Local road and path network

Up links: 23 Parallel Roads 49 Looped Local Roads

Horizontal links:

Down links: 54 Road Crossing

Link to source: http://www.patternlanguage.com/apl/apl50/apl50.htm - requires US $5/month subscription to access

Link to Google Books: 50 T Junctions - look for result showing just pattern number and title

Summaries of content, keywords and links generated by algorithms. Thank you smmry.com:

Summary 1: If major roads are in position - PARALLEL ROADS, and you are in the process of defining the local roads, this pattern gives the nature of the intersections.

Summary 2: Traffic accidents are far more frequent where two roads cross than at T junctions.

Summary 3: Lay out the road system so that any two roads which meet at grade, meet in three-way T junctions as near 90 degrees as possible.

Summary 4: Where two two-way roads cross, there are 16 major collision points, compared with three for a T junction.

Summary 5: Further evidence shows that the T junction is safest if it is a right-angled junction.

Summary 6: At busy junctions, where pedestrian paths converge, make a special raised crossing for pedestrians, something more than the usual crosswalk - ROAD CROSSING.....

Keywords: road junction accidents cross two

Google Image Search: Searching on: road junction accidents cross two