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Polara Engineering
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Polara Engineering

Type of APS
Pushbutton integrated
  • Navigator APS
Image of Navigator APS Polara Navigator 
              APS mounted on a stub pole.
The Navigator APS has a large pushbutton that includes a vibrotactile arrow. A small depression in the arrow enables pushbutton operation with a head stick. Polara Navigator APS mounted on a stub pole.

Standard features
WALK indication
  • Speech message - recorded by manufacturer or customer
  • Cuckoo - 1250 Hz and 1000 Hz .6 sec duration, 1.8 sec interval
  • Chirp - 2700 to 1700 Hz .2 sec duration, 1.8 sec interval
  • Vibrating tactile arrow
  • Pushbutton locator tone
  • Automatic volume adjustment - 60 dB range
  • Actuation indicator-tone and light
  • Extended button press which can be used to activate a pushbutton message, actuate APS or request a louder WALK signal and locator tone for subsequent clearance interval
Optional features
Walk Indication
  • WALK tones or speech messages as requested
  • Fixed WALK message timing or WALK message can be on during full Walk interval
  • Pushbutton information message (voice on location)
  • Braille street name on the face plate
  • Face plate with informational sign
Installation notes
Four pairs of 18-22 gauge wires must run from the control unit to the Navigator pushbutton unit. Control unit mounts in pedhead.

The installer sets separate volume controls for WALK message and locator tone volumes.

The manufacturer is developing a model that operates with only two wires from the intersection traffic control cabinet to the pushbutton and is programmable after installation by an engineer using a handheld PDA type device. The new model will have the capability to synchronize sounds, alternate sounds, mute all sounds except the activated crosswalks, to verbally countdown the pedestrian clearance interval or present a signal at the far end of the crosswalk only.

Polara Engineering, Fullerton, CA

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