Analysis of the Effects and Causes of Driver Horn Use on the Acoustic Environment at Urban Intersections in Taiwan

Car horns were originally installed in vehicles for safety. However, many urban areas several countries face noise problems related to the use of car and motorbike horns. To propose measures suppress horns, relationships between horn factors including driver awareness behavior, traffic environment, transportation system should be investigated. The present study therefore conducted surveys grasp current circumstances at intersections Taiwan. relationship volume standard-sized was found. According an analysis during signal cycles, cases, honked after entering turn left. In particular, when waited more than 4 s front start moving green light allowing left turns turned on. An levels showed that maximum level value (LAmax) could reduced if vehicle not used. Multiple regression also indicated LAmax values increased with frequency use. equivalent continuous A-weighted sound pressure (LAeq,10min) did change use, motorcycles.