交通運用管理

10:50 AM - 11:00 AM JST(1:50 AM - 2:00 AM UTC)

[IV-09] Experiments on in-car audible loudspeaker broadcasts using existing loudspeaker broadcasting equipment

*Yuki Nishimura¹, Yoshitaka Isobe¹, Yuki Ito¹, Shogo Umeda², Keiko Kanno², Emiri Kakoi², Sakae Yokoyama³, Tomohiro Kobayashi³ (1. Metropolitan Expressway Limited, 2. Oriental Consultants Co., LTD., 3. Kobayasi Institute of Physical Research)

Keywords:

Tunnel Disaster Prevention,Vehicle fire,Loud-speaking broadcast equipment,sound pressure,speaker