Study on the road speed limit value of expressway reconstruction and expansion

The application of intelligent transport systems (hereinafter ITSs) on roads enables continuous monitoring of road users during a whole year with the aim to collect good-quality data based on which the more complex analyses could be done, such as monitoring of certain traffic safety indicators. Automatic traffic counters are one of the most commonly implemented ITSs for collecting traffic flow parameters that are relevant for traffic management on state roads in Republic of Serbia. This paper presents one of the possible ways to collect, analyze and present data on road users’ speeds using automatic traffic counters, where certain traffic safety indicators are analyzed in terms of road users’ compliance with the speed limit on the road section from Mali Pozarevac to Kragujevac. Based on the analyses of data downloaded from automatic traffic counters, it is observed that an extremely high percentage of vehicles drive at speed higher than the speed limit, indicating clearly to higher traffic accident risk, as well as to the need for a tendency to implement speed management on roads using ITS in the forthcoming period.

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ROAD SAFETY AWARENESS AMONG UNIVERSITY STUDENTS: CASE STUDY AT MALAYSIA UNIVERSITI TUN HUSSEIN ONN MALAYSIA, JOHOR

Journal of Civil Engineering Science and Technology ◽

10.33736/jcest.3344.2021 ◽

2021 ◽

Vol 12 (1) ◽

pp. 56-65

Author(s):

R. Abd Rahman ◽

H. A. Mazle ◽

W. M. Lim ◽

M. I. Mohd Masirin ◽

M. F. Hassan

Keyword(s):

University Students ◽

Road Safety ◽

Speed Limit ◽

The Road ◽

Young Drivers ◽

Road Signs ◽

Road Sign ◽

Safety Awareness ◽

On The Road

This descriptive study aims to assess the knowledge and awareness of road safety among university students. The study was conducted among students in Universiti Tun Hussein Onn Malaysia by means of questionnaire disseminated online via social media with shareable link to a Google form. The respondents were self-selected to participate in this study where their responses were self-administrated. Questionnaire consisted of 3 sections included demographic information, knowledge on road signs and road safety law, and road safety awareness. 371 students participated in this study, 66% of them age 23 to 27 years old, 61% were female, 92.5% of respondents have at least one type of license with majority agreed that occurrence of accidents resulted in an increase in road safety awareness. The study found that more than half of the participants could not recognise road sign like parking totally prohibited and speed limit ends here. While, 38% of them correctly identified posted speed limit for expressway. Overall, participants have fair understanding on road safety. Therefore, road safety programmes and education are still relevant to university students as young drivers on the road which is important to increase safety awareness.

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Study on the Highway Speed Limit at the Days of Snow and Ice

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.226-228.2362 ◽

2012 ◽

Vol 226-228 ◽

pp. 2362-2365

Author(s):

Jun De Liu ◽

Tian Tian Peng ◽

Jing Zhuang ◽

Ya Juan Deng

Keyword(s):

Traffic Safety ◽

Traffic Accidents ◽

Speed Limit ◽

Practical Application ◽

Highway Traffic ◽

The Road ◽

Ice Conditions ◽

On The Road ◽

Rate Limiting ◽

Snow And Ice

In order to prevent traffic accidents caused by bad speed snow day weather and achieve the purpose of protection of highway traffic safety. Through the analysis of ice conditions, we identified of the rate-limiting model in the snow, snow, snow icing conditions and curve sections, we applied to the model and the calculation of mathematical solution and come to the conclusion of the speed limit which is recommended values at the days of snow and ice disaster conditions. In the practical application, it is convenient to get the speed limit under the necessary conditions through look-up the table of this article in order to ensure the safety of traffic on the road.

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ANALISIS HUBUNGAN KECEPATAN TERHADAP KECELAKAAN LALU-LINTAS DI KOTA BANJARMASIN

Journal of Indonesia Road Safety ◽

10.19184/korlantas-jirs.v2i1.15033 ◽

2019 ◽

Vol 2 (1) ◽

pp. 45

Author(s):

Huddan Rahmani ◽

Akhmad Gazali ◽

Jarkawi Jarkawi ◽

Muhammad Isran Ramli

Keyword(s):

High Speed ◽

Traffic Accidents ◽

Speed Limit ◽

The Road ◽

Driving Speed ◽

On The Road ◽

Almost All ◽

Speed Restrictions ◽

The City ◽

Road Segments

Many factors cause traffic accidents where the driving speed is one of the main causes, and this is known from several studies conducted in universities in the city of Banjarmasin, which chronologically the accident events mostly stated that the vehicles involved in the accident were driven at high speed. The results of recording the speed on the road segment studied violations exceeding the speed limit that is at night before dawn, and this applies to almost all types of vehicles in both directions of the lane at that time the traffic volume decreases. The majority of respondents think that high speed "speeding" is very likely 88.40% resulting in accidents that injure others and themselves. Regarding speed restrictions on all road segments to reduce accidents to the perpetrators, respondents said 83.99% were subject to sanctions, and argued that the potential consequences of behavior beyond the speed limit were very harmful and dangerous, 71.7%. And the main cause of motorists doing "speeding" is to reach their destination on time and even faster, 79.7%. Banyak faktor penyebab kecelakaan lalu-lintas dimana kecepatan berkendaraan merupakan salah satu penyebab utamanya, ini diketahui dari beberapa penelitian yang dilakukan diperguruan tinggi di Kota Banjarmasin yang pada kronologis kejadian kecelakaannya sebagian besar menyebutkan bahwa kendaraan yang terlibat kecelakaan tersebut dipacu dengan kecepatan tinggi. Hasil dari pencatatan kecepatan pada segmen jalan yang diteliti terjadi pelanggaran melebihi batas kecepatan yaitu pada malam menjelang subuh, ini berlaku hampir pada semua jenis kendaraan dikedua arah jalur pada saat itu volume lalu-lintas berkurang. Mayoritas responden berpendapat bahwa berkecepatan tinggi “ngebut” sangat mungkin 88,40% berakibat menyebabkan kecelakaan yang mencederai orang lain dan diri sendiri. Terkait dengan pembatasan kecepatan pada semua segmen jalan untuk mengurangi kecelakaan terhadap pelakunya responden mengatakan 83,99% dikenakan sanksi, serta berpendapat bahwa potensi akibat perilaku melampaui batas kecepatan sangat merugikan dan membahayakan, 71,7%. Dan penyebab utama pengendara kendaraan bermotor melakukan “ngebut” adalah untuk mencapai tujuan tepat waktu dan bahkan bisa lebih cepat, 79,7%.

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Identification of Risk Factors for Collisions Involving Cyclists Based on Gdansk Example

Proccedings of 10th International Conference "Environmental Engineering" ◽

10.3846/enviro.2017.112 ◽

2017 ◽

Cited By ~ 2

Author(s):

Romanika Okraszewska ◽

Kazimierz Jamroz ◽

Marek Bauer ◽

Krystian Birr ◽

Anna Gobis

Keyword(s):

Risk Factors ◽

Traffic Management ◽

Weather Conditions ◽

Traffic Light ◽

The Road ◽

Road Users ◽

Organizational Type ◽

Road Speed ◽

External Conditions ◽

On The Road

The role of pedestrian and bicycle traffic in Poland has growing trend. The comprehensive traffic study, conducted in Gdansk in 2016, has confirmed the increase in the number of cyclists and their share in the modal split. Therefore, it is particularly important to ensure the safety of this group of unprotected road users. Only in 2015 on the roads of Gdansk occurred 93 accidents (excluding collisions) involving cyclists. As a result, 101 people were injured, including nine seriously and 3 people killed. The study aim was to identify risk factors for collisions involving cyclists based on data of accidents reported to the police. The following factors were analysed: the conditions for the drivers on the road (speed limits of, surface conditions), conditions for cyclists (cycling infrastructure, traffic management), external conditions (time of the year, time of the day, weather conditions), conditions organizational (type of intersection, traffic light) as well as the social aspects – the behaviour of all users.

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Spot Speed versus Speed Limit on Malaysian East-Coast Expressway

JOURNAL OF SCIENCE AND APPLIED ENGINEERING ◽

10.31328/jsae.v2i1.910 ◽

2019 ◽

Vol 2 (1) ◽

Author(s):

Sulistyo Arintono

Keyword(s):

East Coast ◽

Warning Sign ◽

Speed Limit ◽

Causal Factors ◽

Speed Reduction ◽

The Road ◽

The Mean ◽

On The Road

Speed is one of the important causal factors for accidents on the road. This study aims to investigate the effectiveness of the speed warning sign on Malaysia’s East Coast Expressway where the rate of accident is high. Two points were selected, one representing locations far from any speed related warning sign, and one location immediately after a speed warning sign is in sight, to assess significance of the differences of the spot speeds. Results of the analysis suggest that the majority of vehicles (63.24%) travel over the speed limit, and that the speed warning sign does function in reducing the mean spot speed. However, the speed reduction is not to the desired level, i.e. under the speed limit. Other strategies have to be introduced to achieve the target.

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Research on the road linear optimization design of bridge and tunnel connecting segment in the canyon

Archives of Transport ◽

10.5604/01.3001.0014.0209 ◽

2019 ◽

Vol 52 (4) ◽

pp. 67-79

Author(s):

Lu Wang ◽

Yuwen Liu ◽

Xiaoxin Chen

Keyword(s):

Traffic Management ◽

Optimization Design ◽

Linear Optimization ◽

Lateral Acceleration ◽

Speed Limit ◽

Force Coefficient ◽

Minimum Radius ◽

The Road ◽

On The Road ◽

Circular Curve

It is easy to skid and roll by centrifugal force and wind, which affects the safety of the vehicle. At the same time, the special location of bridge and tunnel connecting segment in the canyon will accelerate the wind, and make the transverse wind play a more important role in driving vehicles. Based on the acceleration effect of canyons on wind, the vehicle model is simulated by Carsim software, and the road and wind models are established. It is studied that the vehicle has different radius of circular curve under different wind levels, corresponding to different superelevation. The lateral acceleration, lateral deflection and transverse force coefficient are selected as the running state of the vehicle at different speeds to research the linear optimization design of bridge and tunnel connecting segment in the canyon. The result shows that when the wind force exceeds the fifth grade, it is possible for the vehicle to overturn under the limit minimum radius required by the standard value. In order to ensure the stability and safety of the vehicle, this paper considers the geographical position of bridge and tunnel connecting segment in the canyon and the relationship between the radius of the superelevation and circular curve. What’s more, it puts forward the optimal limit minimum radius of the circular curve with different wind grades of 5-9 grades. At the same time, when the road alignment cannot be optimized under the condition, this paper puts forward the speed limit that the vehicle safety can be guaranteed under different wind speed conditions. The speed limit can provide reference for traffic management and safety guarantee of mountain expressway.

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A Study on Effect of Intelligent Speed Adaptation (ISA) to Bus Drivers

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.393.982 ◽

2013 ◽

Vol 393 ◽

pp. 982-987

Author(s):

N.M. Hanif Zamakhshari ◽

Ahmad Khushairy Makhtar ◽

M. Hanif Ramli

Keyword(s):

Speed Limit ◽

Vehicle Speed ◽

Speed Profile ◽

Bus Drivers ◽

The Road ◽

Road Speed ◽

Before And After ◽

Intelligent Speed Adaptation ◽

Attention Level ◽

Local Speed

ntelligent Speed Adaptation (ISA) is a system that constantly monitors vehicle speed, local speed limit on a road and implements an action such as giving warning or discourages the drivers when the vehicle is detected to be exceeding the speed limit. A GPS connected to digital speed map allows Intelligent Speed Adaptation technology to continuously update the vehicle speed limit to the road speed limit. The main purpose of this project is to study the speed profile and effect on drivers psychology on Intelligent Speed Adaptation to bus drivers before and after the intervention of ISA technology. An experiment was conducted on GPS-ISA instrument involving about 20 respondents of Universiti Teknologi MARA (UiTM) Shah Alam Campus bus drivers from various backgrounds. The instrument used to collect data is GPS-ISA device. The data gained from GPS-ISA device is speed profile to specify the speeding and speed variation. To evaluate drivers psychology, a set of questionnaire was designed. The data gained from questionnaire are attention level, stress level, and ISA acceptance level. The result of total differences for all 20 respondents between the average speed before and after the intervention for Zone 1 to Zone 5 was-8.95 km/h. For drivers psychology results, most of the respondents are willing to use ISA system if given a chance. Majority of respondents did not felt any stress and distraction while driving by using ISA system. For conclusion, the ISA system proved to be efficiently reduced speed of busses in UiTM Shah Alam campus zone and can be used as an initiative in order to assist bus drivers to reduce speed of vehicles especially in campus zone.

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Research on Method of Determining Speed Limit Value of Block Community

Transportation Research Record Journal of the Transportation Research Board ◽

10.1177/0361198119853572 ◽

2019 ◽

Vol 2673 (11) ◽

pp. 447-455

Author(s):

Xiaoning Wang ◽

Yu Zhang ◽

Shaosha Fan

Keyword(s):

Traffic Congestion ◽

Road Network ◽

Cost Model ◽

Traffic Noise ◽

Cost Calculation ◽

Speed Limit ◽

Total Cost ◽

The Road ◽

Limit Value ◽

Starting Point

Where enclosed or gated residential communities contribute to traffic congestion on surrounding streets, the implementation of the block community can alleviate traffic congestion to some extent, but it will also have an impact on the environment of the community. By analyzing the characteristics of the block community, this paper selects the typical cell and takes speed as the starting point to consider the operational efficiency of the road network, and the traffic noise and automobile exhaust pollution, comprehensively. The time cost model of the block community, the vehicle exhaust cost model, and the traffic noise cost model are constructed. On this basis, the total cost model of the road network system is constructed, and the speed limit value within the block community is determined with the lowest total cost. Taking the Ouzhouxincheng Community in Harbin, China, as an example, the cost calculation is carried out according to the open plan to determine the optimum speed limit system.

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