S/no. Notation Definitions
1. X1 Hearing ability
2. X2 Age
3. X3 Religion affiliation (Christian/Muslim/traditional)
4. X4 Education attainment effects
5. X5 Driving experience
6. X6 Vehicle ownership
7. X7 Previous eye tests
8. X8 Perceived eye condition
9. X9 Preferred night driving period
10. X10 Non-use/use of road signs
11. X11 Lack of knowledge of zonal speed
12. X12 Working speedometer absence
13. X13 Drink alcohol before driving
14. X14 Overtaking tendency
15. X15 Over-speeding tendency
16. X16 Smoke cigarette and other things
17. X17 Eat kolanut while driving
18. X18 Eye problem
19. X19 Use of charms/traditional religious practices as protection
20. X20 Neglect of general servicing of vehicle
21. X21 Brake negligence
22. X22 Failure to maintain tyres
23. X23 Negligence of engine maintenance
24. X24 None formal training
25. X25 Lack of proper reaction to road defects and obstructions