This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
The Accuracy of Pedestrians in Estimating the Speed of a Moving Vehicle
Technical Paper
2013-01-0785
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
This study was performed in order to evaluate the accuracy with which pedestrians estimate the speed of nearby automobiles. A total of 87 subjects were involved in this experiment, with 487 useful speed estimates being obtained from them. The vehicle speeds were measured using radar guns, and the moving cars were located upstream, downstream, and adjacent to the subjects. A survey form was used to obtain attributes about each subject. A multivariate regression was used to allocate portions of the variation in the percent error among the various factors that describe the subject and the moving vehicle. Statistical significance was discovered for the main effects and some interactions among: gender, driving experience, a self-assessment of ability to estimate such speeds, the use of the posted speed limit, the speed of the target vehicle, and the location of the vehicle on the roadway. The implications for speed estimation accuracy are presented, both for categories of subjects and for individual subjects. The standard deviation in the accuracy of individuals was remarkable for its large magnitude and its persistence over all the categories of subjects and also the different vehicle speeds and locations.
Recommended Content
Authors
Citation
Strauss, M., Carnahan, J., and Ruhl, R., "The Accuracy of Pedestrians in Estimating the Speed of a Moving Vehicle," SAE Technical Paper 2013-01-0785, 2013, https://doi.org/10.4271/2013-01-0785.Also In
References
- Aberg , L. et al. Observed Vehicle Speed and Drivers' Perceived Speed of Others Applied Psychology: An International Review 1997 46 3 287 302
- Conchillo , A. et al. Comparing Speed Estimations from a Moving Vehicle in Different Traffic Scenarios: Absence versus Presence of Traffic Flow The Spanish Journal of Psychology 2006 9 1 32 37
- Evans , L. Speed Estimation from a Moving Automobile Ergonomics 1970 13 2 219 220
- Green , G. The Pedestrian's Judgment of the Minimum Time Interval to Allow when Crossing the Road Transport and Road Research Laboratory unpublished note RN 2238 1954
- Hinch , J. A Study into the Estimation of Vehicle Speeds and Distances by Untrained Pedestrians MSc Thesis University of Birmingham 1967
- Hurford , R. Speed Estimation MSc Thesis University of Birmingham 1968
- Hutchinson , T. Witnesses' Estimates of the Speeds of Traffic Accidents Accident Analysis and Prevention 1975 7 27 35
- Kebbel , M. et al. The Influence of Belief that a Car Crashed on Witnesses' Estimates of Civilian and Police Car Speed The Journal of Psychology 2002 136 6 597 607
- Kebbel , M. and Giles , D. Some Experimental Influences of Lawyers' Complicated Questions on Eyewitness Confidence and Accuracy The Journal of Psychology 2000 134 2 129 139
- McAllister , H. et al. Speed Estimates by Eyewitnesses and Earwitnesses; How Vulnerable to Postevent Information? Journal of General Psychology 1988 115 1 25 35
- Montgomery , D. and Runger , G. Applied Statistics and Probability for Engineers 2nd John Wiley & Sons New York 1999
- Milosevic , S. and Milic , J Speed Perception in Road Curves Journal of Safety Research 1990 21 19 23
- Recarte M. , and Nunes , L. Perception of Speed in an Automobile: Estimation and Production Journal of Experimental Psychology: Applied 1996 2 4 291 304
- Scialfa , C. et al. Age Differences in Estimating Vehicle Velocity Psychology and Aging 1991 6 1 60 66
- Strauss , M. and Carnahan , J. How well can the average person and police estimate distance along a roadway? AREC Proceedings Wildhaus, Switzerland 2010
- Strauss , M. and Carnahan , J. Observed Errors in Distance Estimation SAE Technical Paper 2010-01-0046 2010 10.4271/2010-01-0046