Assessment Of Drivers Comprehension Of Traffic Control Devices (the Case Of Addis Ababa)

Traffic control devices provide essential information to road users for their safe and efficientrnmaneuvering on the road. The driving behavior of drivers in Addis Ababa City is rarely inrncompliance with the traffic control devices. There is no literature on drivers’ compliance towardsrntraffic control devices in Addis Ababa city. The main objective of this research is to identifyrnwhich drivers’ personal characteristics played prominent roles in drivers’ understanding of trafficrncontrol devices and to investigate the driver compliance to signalize and two-way stop controlrnintersections. To study driver’s comprehension of traffic control devices in Addis Ababa,rnChurchill to Stadium segment and Semien Mezagjah TWSC intersection were selected. Theyrnconsisted of four traffic signalized intersections namely Eliana, Tracon, EBC, and Harambe, andrnalso have speed limit sign, No entry, road marking, No parking sign, No U-turn sign, and No leftrnturn. Data collection was done using a questionnaire and video recordings. 385 drivers wererninterviewed to determine factors affects driver’s compliance of traffic control devices and videornrecording of four traffic signalized intersection and one two-way stop-controlled intersection atrnpeak hours on Tuesday and Wednesday in the morning and afternoon to determine therncorrelation between traffic volume and violation rate of signalized intersections. Chi-square testrnwas used to identify factors affecting driver’s compliance of traffic control devices whilernCorrelation analysis was used to describe the relationship between traffic volume and violationrnrate at the signalized intersection. Gender, age, educational background, driving experience, andrntype of vehicle driven were found as dominant factors affecting drivers’ comprehension of trafficrncontrol devices. All variables were found statistically significant at 95% of significance tornpredict driver’s compliance with traffic control devices. Correlation analysis suggests that rightrnturn on red (no stop) violation rate and right turn volume are correlated positively (r=0.905). Thisrnindicates that as of right turn volume increases, the right turn on red (no stop) violation raternincreases. Running on red light rate and through, left-turn traffic volume, total violation rate andrntotal traffic volume were found negatively correlated with r=-0.74 and r=-0.841 respectively.rnThis indicates that as of traffic volume increases, the violation rate decreases. In addition,rnreasons for noncompliance with traffic control devices are most likely related to the personalrnreason of drivers.

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