Naslov
Use of GPS data logger and ball bank indicator for detection of potentially hazardous location on roads

Autori
Cvitanić, Dražen ; Viđak, Boris ; Vukoje, Biljana ; Breški, Deana

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Sustainable and safe road design from a human behaviour point of view - Challenges for interdisciplinary work in road safety, Book of abstracts / - Maribor, 2013, 1-7

Skup
26th ICTCT Workshop on: Sustainable and safe road design from a human behaviour point of view - Challenges for interdisciplinary work in road safety

Mjesto i datum
Maribor, Slovenija, 24.10.2013. - 25.10.2013

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Ball bank indicator; road designconsistency; GPS; side friction factor

Sažetak
This paper deals with a detection of potential hazardous locations on roads. The geometric characteristics of road (horizontal alignment, vertical alignment and superelevation) play a significant role on driving safety. Last decades many researchers analyzed highway design consistency in terms of maintaining the desired travel speed. They proposed the use of operating speed models for checking road design consistency from safety point of view. Many of them suggested a quantitative approach to evaluate design consistency based on vehicle stability, proposing different superelevation and side friction distribution. This paper presents a method for determining the road alignment characteristics which can significantly affect driving safety (superelevation changes, side friction demand, radii....). The proposed method involves a device called “ball bank indicator” and specialized GPS device. The changes in controlled characteristics can significantly affect driving safety. Side friction demand which depends on vehicle speed vehicle, tire characteristics and superelavation rate, has the most significant impact on driving safety in curves. It was used Performance Box, 10 hz GPS data logger based on the Racelogic VBOX which is used by the majority of car and tire manufactures around the world to asses car and tire performance. PerformanceBox is a GPS based performance meter for measuring side forces, speed, braking distance and many more. Performance tool software allows graphical analysis of acceleration (lateral and longitudinal), braking and cornering characteristics. The highway location can easily be export to Google earth, Track vision and other mapping software at various coordinate systems. In addition to this device it was used a “ball bank indicator”, an inclinometer which measures influence of centripetal acceleration, body roll and cross slope. These devices were used to get a continuous data of side friction demand on five km long segment of state highway on which many accidents occurred during last decade. Two locations with large radial acceleration (several times larger than allowed) were identified in test drives using ball bank indicator. Great demand for side friction can lead to inadequate driver's reaction (sudden speed change or a suddenmaneuver) which can result in a reduction of side friction supply and an accident.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo

POVEZANOST RADA