Evidence map›Paper›PMID 29040302›Full record

ArticlePloS one2017

An investigation of perceived vehicle speed from a driver's perspective.

Changxu Wu, Dekuang Yu, Amy Doherty, Tianyi Zhang, Leo Kust, Gang Luo

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
3.1field-weighted citation impact, top 9% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed, 40 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 5 institutions in 2 countries.

Changxu WuCenter for Psychological Science at Zhejiang University, Hangzhou, Zhejiang Province, China.
Dekuang YuSouthern Medical University, Guangzhou, Guangdong Province, China.
Amy DohertyHarvard Medical School, Boston, Massachusetts, United States of America.
Tianyi ZhangUniversity of Arizona, Tucson, Arizona, United States of America.
Leo KustUniversity at Buffalo-The State University of New York, Buffalo, New York, United States of America.
Gang LuoHarvard Medical School, Boston, Massachusetts, United States of America.
Harvard University · USSouthern Medical University · CNUniversity at Buffalo, State University of New York · USUniversity of Arizona · USZhejiang University · CN

Funding

Bioptic driving by visually impairedR01AG041974 · NIA · SCHEPENS EYE RESEARCH INSTITUTE · PI LUO, GANG · 2012 to 2016
$2.0M
NIA NIH HHS R01 AG041974
6 · The paper itself

Abstract

purposeSpeed estimation of drivers' own vehicles and other vehicles on the road is an important task for drivers and is also crucial to the roadway safety. The objective of the study was to examine the effects of multiple factors such as image scale, speed, road type, driving experience, and gender on the speed perception of drivers' own vehicles.

methodsThirty participants consisted of 17 males and 13 females, including 13 without driving experience. All participants estimated the driving speed of 192 5-second video clips, which were selected from naturalistic driving recordings. The recorded driving speeds were evenly distributed across the entire range from 5mph to 65mph. Half of the selected video clips were recorded on wide roads and another half were recorded on comparatively narrow roads. Video clips were played on a large screen, with each clip shown in one of 4 image scales (100%, 75%, 50%, and 38% of the actual field of view in the real world).

resultsSpeed estimates were most accurate for the smallest image size (38% of the actual field of view). As the image size increased, the driving speed was increasingly underestimated. Participants with driving experience accurately estimated the driving speed on both wide and narrow roads whereas those without driving experience had greater underestimates on wider roads. Speeds were most accurately estimated within the range 25-35mph, but the speeds slower than the range tend to be overestimated and the speeds faster than the range are more likely to be underestimated. While males and females showed the same pattern across speed groups, females have greater estimation errors at the highest and lowest speed groups. Participants without driving experience showed increasing underestimation of speed as driving speed increased whereas participants with driving experience primarily underestimated the highest speeds.

conclusionsThe present study shows the effect of multidimensional influential factors on perceived vehicle speed from drivers' perspective. The results also have implications for driving simulation scenario design, driving simulator setup, and the assessment of speed control in simulated and naturalistic environments.

Indexed as

Accidents, TrafficAdolescentAdultAgedAutomobile DrivingComputer SimulationDistance PerceptionFemaleHumansMaleMiddle AgedMotion PerceptionSafetyTask Performance and AnalysisVideo RecordingVisual Perception

Identifiers

PMID29040302
PMCPMC5644980
OpenAlexW2766473699

What OpenQuestion holds

Textmetadata
LicenceCC BY
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.