Alertus / Tunnel Solutions

Mass Notification for Tunnels

Enhance Notification Reach And Effectiveness With Audible And Visual Notification

Alertus understands the importance of providing audio and visual notification within challenging structures such as tunnels. Along with the problematic acoustic conditions that a tunnel presents, there are also network, structural, and environmental challenges.

Alertus has created a comprehensive audible visual solution, including fully integrated speakers and strobes that improve safety and communication in mining, pedestrian, railway, subway, and highway tunnels. 

Alertus’ speaker systems utilize strategically placed loudspeakers installed along the length of each tunnel. The speakers are connected to a network of remote terminal units empowering tunnel operators or authorities to broadcast clear, pre-recorded messages, live announcements, or text-to-speech messages. Possible alerting scenarios include traffic conditions, terrorist attacks, accidents, evacuation orders, shelter-in-place, flood alerts, gas releases, lane closures, speed limits, emergencies, or general announcements.

Alertus System’s audible and visible notification methods can help you overcome unique notification challenges, including: 

• Road signs blocked or damaged

• Loud, dangerous environments

• Reaching individuals with auditory or visual impairments

• Difficulty reaching people in vehicles who need to egress during emergency

Clear Intelligible Voice Messages

In emergencies, the tunnel notification speaker system plays a crucial role in quickly disseminating important instructions and evacuation procedures, even in the presence of high noise levels to ensure the safety of tunnel occupants.

To optimize sound dispersion and overcome acoustic challenges, our speaker solution is equipped with advanced audio processing technologies and audio drivers capable of reproducing a large band of the audio spectrum. Voice intelligibility will also be greatly affected by the placement and design of your sound system.

Our team of engineers has years of experience strategically placing speakers and strobes to assure clear voice and highly visible alerting apparatus.

audible Notification with the HPS 150 Watt Horn

The Alertus 150 Watt speaker is an exponential horn made out of an aluminum alloy to survive harsh environments. Our high-quality audio driver is enclosed in an easy-to-access back cap and can be screwed in and out similarly to a lightbulb. Each speaker can be installed on a 3.5” O.D. mount, providing an easy method of installation in just about any location. An optional bug screen can be added to prevent unwanted nesting and blockage of the speaker horn.

• Clear tone and intelligible voice messaging 

• Pointed in the direction of traffic for clear announcements

• Lightweight for easy installation

• Aluminum alloy makeup for harsh environments

• Horizontal line arrays can be created for larger tunnels by using two speakers

HPS 150 DIMENSIONS & SPECIFICATIONS

Audio Amplification System 

The Alertus speaker system can operate at 35 Volts 4 / 8 ohm or, with the addition of step up transformers, 70 or 100 volts. The type of system specified will depend on the application. Alertus can help your team decide the correct type of speaker needed for each alerting area.

Enhance Tunnel Notification with Visual Alerting