Abstract: Detection Systems for Vehicle Honking (DSVHs) based on a microphone array can provide evidence for regulating improper honking behavior. The traceability of DSVH monitoring moving vehicles is an important problem and still needs to be solved. There is a lack of consensus about the solution of this problem. Based on the principle and efficacy of DSVH, the influence of Acousto-Optic Image Time Consistency (AOITC) and the Accuracy of Sound Pressure Levels (ASPL) on the accuracy of DSVH was analyzed . The calibration method for AOITE and ASPL is provided in this paper. Two DSVHs from different manufacturers on the market were tested. The results showed that the AOITC was less than 50 ms and its impact on the accuracy of DSVH could be ignored, the ASPL was within 3 dB, and the result at 4.0 m was better than those at 3.5 m and 3.0 m.