Glossary of Data Variables for Fatal and accident causation ... - ERSO

# Variable Value Notes
R57 Local area
Work package 5 Database Glossary
The general characteristics of the area where the accident took place.
1 = Urban
2 = Rural
3 = Mixed
-888 = Unknown
R58 Vertical Alignment 1 = Uphill
2 = Downhill
3 = Flat
4 = Blind summit
-888 = Other
-999 = Unknown
R59 Horizontal Alignment 1 = Straight road
2 = Bend to left
3 = Bend to right
Cities, towns or large villages. Generally densely populated with residential, commercial and
industrial areas. Roads normally have low speed limits and are street lit with a greater
density of junctions. Vehicle traffic is normally slow moving and includes a greater number of
pedestrians.
Country area. Roads are normally bordered by hedges, fields or trees which lead to a more
sparsely populated area. Vehicle speeds are generally higher. For a motorway or major road
with fields either side code as rural.
An area which has a combination of the features outlined for ‘Urban’ and ‘Rural’ generally
found on the outskirts of a large town.
The lay of the carriageway in the vertical plane at the scene of the accident.
A point where it is not possible to see where the road is heading.
The way the road is laid out in the horizontal plane at the scene of the accident.
-888 = Other
-999 = Unknown
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