| Title |
THE SAFETY EFFECT OF CONVERSION TO ALL-WAY STOP CONTROL
|
| Accession No |
00474244 |
| Authors |
Lovell, J; Hauer, E |
| Journal Title |
Transportation Research Record
No. 1068 |
Corp. Authors
/ Publisher |
Transportation Research Board
|
| Publication Date |
19860000 |
| Description |
p. 103-107;
Figures(2); References(8); Tables(6) |
| Abstract |
Past studies documenting the safety effect of converting intersection traffic control to all-way stops have consistently shown impressive accident reductions. Because, ordinarily, it was high-accident locations that were converted, it was difficult to know how much of the reduction was real and how much was an artifact of regression-to-the-mean. Data from three recent studies were reanalyzed and debiased. In addition, a new data set was assembled and examined. Analysis revealed that, although somewhat inflated, the reductions reported in the earlier studies were quite real and were confirmed by the new data. The empirical information contained in the data sets was captured in likelihood functions and the four functions were joined. Taken individually, the four data sets showed reductions in total accidents ranging from 37 to 62 percent. The joint likelihood function indicates a most likely accident reduction of 47 percent in total accidents. |
Supplemental
Information |
This paper appeared in Transportation Research Record N1068, Traffic Accident Analysis, Alcohol Involvement, and Evaluation of Highway Improvements. |
| TRT Terms |
Accident prone locations ; Intersections ; Mathematical analysis ; Measures of effectiveness ; Multiway stop signs ; Safety ; Traffic control |
| Other Terms |
Accident reduction; Data analysis; Effectiveness; Four way stop signs; High accident locations; Safety measures |
| Subject Areas |
H54 OPERATIONS AND TRAFFIC CONTROL; H51 SAFETY; I81 Accident Statistics; I73 Traffic Control |
| ISBN |
0-309-04062-0 |
| Report Number |
HS-039 862 |
| Availability |
Transportation Research Board Business Office Find a library where document is available
|
| TRIS Files |
HRIS |
| Database |
TRIS Online |
