| S.No | Items | N | Mean | SD | CI 95% | |
| Lower | Upper | |||||
| 1. | Texting | 373 | 1.2842 | .6473 | 1.2225 | 1.3539 |
| 2. | Checking message (e.g., sms/facebook/zalo) | 373 | 1.4263 | .8119 | 1.3512 | 1.5121 |
| 3. | Answering a phone call | 373 | 1.8338 | .9005 | 1.7453 | 1.9276 |
| 4. | Making a phone call | 373 | 1.6032 | .8476 | 1.5201 | 1.6970 |
| 5. | Driving on the sidewalk | 373 | 1.9893 | 1.0343 | 1.8901 | 2.1018 |
| 6. | Driving in the opposite direction | 373 | 1.1582 | .4327 | 1.1180 | 1.2038 |
| 7. | Not wearing a helmet when riding a motorbike | 373 | 1.3485 | .6930 | 1.2761 | 1.4182 |
| 8. | Wearing a helmet that fails to guarantee your safety (e.g., without a buckle or without quality assurance) | 373 | 1.5416 | 1.1223 | 1.4316 | 1.6541 |
| 9. | Using alcohol of any type | 373 | 1.2574 | .5269 | 1.2038 | 1.3137 |
| 10. | Passing the traffic light even after it turns yellow | 373 | 1.6810 | .8598 | 1.5952 | 1.7774 |
| 11. | Driving in fatigue (after exercising or staying up all night long) | 373 | 1.8016 | .9148 | 1.7212 | 1.8954 |
| - | Traffic Risky Behaviors (total) | 373 | 1.5386 | .3826 | 1.4984 | 1.5784 |