scholarly journals Towards Safer Rides: Measuring Motorcycle Dynamics with Smartphones

2020 ◽  
Author(s):  
Maximilian Stanglmayr ◽  
◽  
Maximilian Bäumler ◽  
Keyword(s):  
Measurement System ◽  
Inertial Sensors ◽  
Road Traffic ◽  
Low Cost ◽  
Measurement Data ◽  
Smartphone App ◽  
High Precision Measurement ◽  
Road Users ◽  
Vulnerable Road Users ◽  
Motorcycle Dynamics

Motorcyclists are among the most vulnerable road users in road traffic. Often, the cause of accidents is a loss of control on rural roads which could be averted by making use of the physical potential in terms of larger lean angles. At the same time, in reality driven lean angles over a larger group of riders and a longer route are unknown which is mainly due to the special measuring technology required. The focus is therefore on the development of a low-cost measurement method for measuring the lean angles of motorcycles. Smartphones are usually characterized by integrated inertial sensors, which are suitable for the acquisition of motorcycle driving dynamics. Employing a smartphone app tailored to the requirements for collecting measurement data on the motorcycle, the data of the sensors are recorded. During the offline evaluation, the rotation angles between the smartphone and the motorcycle coordinate system are determined, the inertial measurement data are transformed and the roll angle is calculated. An essential part is the alignment of the developed measurement chain with a high-precision measurement system. This was carried out on different routes and thus the data quality was determined. As a feasibility study, a test person study with several participants was carried out, which confirmed the practical suitability of the measurement chain. Hence, the study outcomes are briefly shown and discussed. The successful validation on different routes, the practical suitability of the data acquisition and the accuracy of the measurement system encourage to roll out the smartphone app to a larger panel of test persons and thus to collect data on a larger driver collective.

OPTIMISING ROAD LIGHTING TO REDUCE ROAD TRAFFIC CRASHES

2021 ◽  
Author(s):  
C.J. Robbins ◽  
S. Fotios ◽  
J. Uttley ◽  
R. Rowe
Keyword(s):  
High Speed ◽  
Road Traffic ◽  
Cost Benefit ◽  
Light Level ◽  
Traffic Crashes ◽  
Road Traffic Crashes ◽  
Road Lighting ◽  
Road Users ◽  
Ambient Light Level ◽  
Vulnerable Road Users

Pedestrians and motorcyclists are vulnerable road users, being over represented in road traffic collisions (RTCs). One assumed benefit of road lighting is a reduction in RTCs after dark by countering the impairment to the visual detection of hazards that occur after dark. One way to optimise the use of road lighting is to light only those sections of road where light level, and hence visibility, is an important factor. The current study used change in ambient light level on RTCs to investigate those situations where improved vision is likely to have significant impact, and therefore the situations where road lighting is of better cost-benefit effectiveness. For both motorcyclist and pedestrian RTCs there was a significant increase in overall RTC risk in darkness compared to daylight, indicating that there may be an overall benefit of road lighting. While darkness was a particular detriment at junctions for motorcyclists and on high-speed roads for pedestrians, road lighting may not be effective mitigation in either case and therefore alternative ways of increasing conspicuity should be considered.

Development of Bioimpedance Sensors and Measurement System for Biomedical In-Vitro Applications

2021 ◽  
Vol 7 (2) ◽  
pp. 496-499
Author(s):  
Stadler B. Eng. Sebastian ◽  
Herbert Plischke ◽  
Christian Hanshans
Keyword(s):  
Measurement System ◽  
Low Cost ◽  
Measurement Data ◽  
Impedance Measurement ◽  
Microtiter Plate ◽  
Label Free ◽  
Single Chip ◽  
Do It Yourself ◽  
Store And Forward

Abstract Bioimpedance analysis is a label-free and easy approach to obtain information on cellular barrier integrity and cell viability more broadly. In this work, we introduce a small, low-cost, portable in vitro impedance measurement system for studies where a shadow-free exposure of the cells is a requirement. It can be controlled by a user-friendly web interface and can perform measurements automated and autonomously at short intervals. The system can be integrated into an existing IoT network for remote monitoring and indepth analyses. A single-board computer (SBC) serves as the central unit, to control, analyze, store and forward the measurement data from the single-chip impedance analyzer. Various materials and manufacturing methods were used to produce a purpose-built lid on top of a modified 24-well microtiter plate in a “do it yourself” fashion. Furthermore, three different sensor designs were developed utilizing anodic aluminum oxide (AAO) membranes and gold-plated electrodes. Preliminary tests with potassium chloride (KCl) showed first promising results.

Comparison of epidemiology and injury profile between vulnerable road users and motor vehicle occupants in road traffic fatalities

2019 ◽  
Vol 20 (6) ◽  
pp. 581-587 ◽  
Author(s):  
Sang-Chul Kim ◽  
Hae-Ju Lee ◽  
Ji-Min Kim ◽  
So-Yeon Kong ◽  
Jung-Soo Park ◽  
...  
Keyword(s):  
Motor Vehicle ◽  
Road Traffic ◽  
Traffic Fatalities ◽  
Road Users ◽  
Vulnerable Road Users

scholarly journals Road traffic-related deaths among vulnerable road users. Argentina, 1980 - 2007

2010 ◽  
Vol 16 (Supplement 1) ◽  
pp. A132-A133
Author(s):  
C. Ubeda ◽  
V. Espitia ◽  
R. Peltzer ◽  
A. Perinetti
Keyword(s):  
Road Traffic ◽  
Road Users ◽  
Vulnerable Road Users

scholarly journals Method for Pedestrian Crossing Risk Assessment and Safety Level Determination: the Case Study of Tallinn

2016 ◽  
Author(s):  
Maria Pashkevich ◽  
Anna Krasilnikova ◽  
Dago Antov
Keyword(s):  
Traffic Accidents ◽  
Road Traffic ◽  
Risk Level ◽  
Safety Level ◽  
Road Users ◽  
Vulnerable Road Users ◽  
Pedestrian Crossing ◽  
The City ◽  
Traffic Measurements

Pedestrians are a part of vulnerable road users which safety requires a special attention. Official statistics in Estonia from the last decade returns the following numbers: around 30 % of all road traffic accidents in the country were accidents with pedestrians, 32 % of all traffic fatalities were finished with pedestrian death. Pedestrian crossing has the biggest risk level between all kinds of pedestrian facilities, because it includes a direct conflict point between vehicle and pedestrian traffics. The article presents a method to assess risk of pedestrian crossing users and to determine safety level of this road infrastructure element. This approach is based on observation and collection of infrastructural as well as traffic data, which includes: (1) information about each pedestrian crossing facility, its location and state, (2) data about accidents with pedestrians and their features, (3) data from road traffic measurements. The main advantages of the described method are universality and comprehensiveness. The case study was done in Kristiine district of the city Tallinn, which was chosen as the most typical average district of Estonian capital. Results of this study are also presented in the article.DOI: http://dx.doi.org/10.4995/CIT2016.2016.4124

scholarly journals A Practical Approach for High Precision Reconstruction of a Motorcycle Trajectory Using a Low-Cost Multi-Sensor System

Sensors ◽  
2018 ◽  
Vol 18 (7) ◽  
pp. 2282 ◽  
Author(s):  
Sarra Smaiah ◽  
Rabah Sadoun ◽  
Abdelhafid Elouardi ◽  
Bruno Larnaudie ◽  
Samir Bouaziz ◽  
...  
Keyword(s):  
Road Safety ◽  
Low Cost ◽  
Safety Data ◽  
Loss Of Control ◽  
Initial Training ◽  
Road Users ◽  
Sensor Platform ◽  
Single Vehicle ◽  
Vulnerable Road Users ◽  
The Way

Motorcycle drivers are considered among the most vulnerable road users, as attested by the number of crashes increasing every year. The significant part of the fatalities relates to “single vehicle” loss of control in bends. During this investigation, a system based on an instrumented multi-sensor platform and an algorithmic study was developed to accurately reconstruct motorcycle trajectories achieved when negotiating bends. This system is used by the French Gendarmerie in order to objectively evaluate and to examine the way riders take their bends in order to better train riders to adopt a safe trajectory and to improve road safety. Data required for the reconstruction are acquired using a motorcycle that has been fully instrumented (in VIROLO++ Project) with several redundant sensors (reference sensors and low-cost sensors) which measure the rider actions (roll, steering) and the motorcycle behavior (position, velocity, acceleration, odometry, heading, and attitude). The proposed solution allowed the reconstruction of motorcycle trajectories in bends with a high accuracy (equal to that of fixed point positioning). The developed algorithm will be used by the French Gendarmerie in order to objectively evaluate and examine the way riders negotiate bends. It will also be used for initial training and retraining in order to better train riders to learn and estimate a safe trajectory and to increase the safety, efficiency and comfort of motorcycle riders.

Study on Hazard Perception of Malaysian Drivers

2014 ◽  
Vol 663 ◽  
pp. 644-648
Author(s):  
Syed Tarmizi Syed Shazali ◽  
Anand Selvam ◽  
Zamri Bujang
Keyword(s):  
Rural Areas ◽  
Road Traffic ◽  
Road Accident ◽  
Hazard Perception ◽  
Novice Drivers ◽  
Road Users ◽  
Driving Skill ◽  
Accident Causation ◽  
Vulnerable Road Users ◽  
Causes Of Deaths

Road accident is one of the top ten causes of deaths around the world. Malaysia is not an exception as in the year 2007 there were 6282 road traffic fatalities and 21363 non-fatal road traffic injuries. Research on hazard perception skill of drivers in recent years shows that the driving skill is a mian factor of accident causation and accident prevention. A video-based hazard perception test and questionnaires were used to study the effect of experience, type of hazards, and type of driving settings to the hazard perception skill of Malaysian drivers. The findings of the study shows that in general experienced drivers have better hazard perception than novice drivers, and experience in road accident contributes toward the development of hazard perception more significantly among novice drivers. The study also shows that both driver groups have slowest perception on hazards caused by vulnerable road users. Drivers also perceive hazards faster in rural areas compared to residential and city areas.

scholarly journals Analisis Sistem Pengukuran Getaran Mems Accelerometer ADXL345

2019 ◽  
Vol 9 (02) ◽  
pp. 63-67
Author(s):  
Indra Feriadi ◽  
Fajar Aswin ◽  
M Iqbal Nugraha
Keyword(s):  
Measurement System ◽  
Low Cost ◽  
Measurement Data ◽  
Micro Electro Mechanical System ◽  
Vibration Measurement ◽  
Measurement Technology ◽  
Mems Accelerometer ◽  
Analysis Technique ◽  
Develop Approach ◽  
Mems Technology

Vibration measurement technology using conventional sensors such as piezoelectric (PZT) Accelerometer is still expensive. Currently, many low-cost vibration measuring devices have been developed by using Micro Electro Mechanical System (MEMS) technology. This study aims to analyze the results of vibration measurement system MEMS Accelerometer ADXL345 with PZT Accelerometer. This research applies design and develop approach with comparative data analysis technique, that is comparing data of result of measurement of MEMS Accelerometer ADXL345 to PZT Accelerometer Vibroport80. The construction comprises the ADXL345 sensor connected to the Arduino Mega 2560 microcontroller operated by Widows operating system and programming language Arduino IDE 1.08. Testing of measurements at Bearing speeds of 500, 1000, and 1500 RPM with length of time measurements at 5, 10, and 20 seconds respectively. The analysis of the test results shows that the MEMS Accelerometer ADXL345 of vibration measurement system can measure, process and display vibration measurement data larger 3% than PZT Accelerometer and can provide the best measurement accuracy at 20 seconds measurement length of time.

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