BE368434A - - Google Patents

Info

Publication number
BE368434A
BE368434A BE368434DA BE368434A BE 368434 A BE368434 A BE 368434A BE 368434D A BE368434D A BE 368434DA BE 368434 A BE368434 A BE 368434A
Authority
BE
Belgium
Prior art keywords
rails
microphone
vibrations
microphones
train
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE368434A publication Critical patent/BE368434A/fr

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61LGUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L29/00Safety means for rail/road crossing traffic
    • B61L29/24Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
BE368434D BE368434A (en:Method)

Publications (1)

Publication Number Publication Date
BE368434A true BE368434A (en:Method)

Family

ID=40256

Family Applications (1)

Application Number Title Priority Date Filing Date
BE368434D BE368434A (en:Method)

Country Status (1)

Country Link
BE (1) BE368434A (en:Method)

Similar Documents

Publication Publication Date Title
TWM405993U (en) Acoustic warning device for vehicle
BE368434A (en:Method)
US1631368A (en) Police signal system
BE566238A (en:Method)
BE394724A (en:Method)
BE1018285A6 (fr) Emetteur de "silence" et/ou de messages personnalises et/ou libres pour vehicule d'intervention d'urgence et passage a niveau.
EP0161378A1 (fr) Dispositif d'alarme et signalisation de tremblements de terre et de mouvements sismiques de tout genre
BE366774A (en:Method)
FR2786300A1 (fr) Systeme de guidage et/ou d'information
BE355284A (en:Method)
US1130522A (en) Party-line listening-in-detecting device.
CN207897156U (zh) 一种汽车多功能喇叭装置
BE478383A (en:Method)
BE392795A (en:Method)
BE475484A (en:Method)
CH83619A (fr) Installation de traction dans laquelle les freins à air comprimé des véhicules peuvent être actionnés automatiquement depuis la voie
EP1146771A1 (fr) Téléphone mobile avec haut-parleur perfectionné
JP2005252419A (ja) 道路利用者誘導システム
FR2829276A1 (fr) Echappement passif et actif pour la resonance sonore
KR980007820A (ko) 음성합성 칩이 내장된 원격시동 경보기
BE552991A (en:Method)
CH610425A5 (en) Electrically controlled attention getter, especially for a flat or office
BE506291A (en:Method)
BE437555A (en:Method)
CN1214606A (zh) 带可调电位器防止啸叫装置的音箱