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State of Practices section Case Studies
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Devices section Manufacturers
Bob Panich
Polara Engineering
Prisma Teknik
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Field Adjustments

Prisma Teknik

Type of APS
Pushbutton integrated
  • Several models with different features: TS-907, TS-903F, TS-904, TS-908
  • Additional pedhead mounted beaconing speaker (TS-995) available

Exploded diagram of prisma APS showing modular construction. The vibrotactile arrow on the top cover can be placed in any orientation.

Prisma TS-907, with electronic front panel actuation, actuation indicator, tactile arrow, and tactile crosswalk map.

Standard features
WALK indication

Rapidly repeating percussive tone.

  • Pushbutton locator tone
  • Tactile arrow
  • Automatic volume adjustment within range of 55- 95 dB
  • Actuation indicator - light and tone
  • Crosswalk tactile map (Braille map)
  • Fault indicator
Optional features
Walk Indication
  • 10 different WALK tones available by setting dip switch
  • Vibrating button or arrow on bottom or top of device
  • Speech WALK message
  • Additional beaconing speaker for mounting at overhead location
  • 10 different locator tones available by setting dip switch.
  • Pushbutton information message 1- 16 seconds
  • Night switch to change to less obtrusive sound
  • Double-ended arrow available for use on medians
  • Right-angle arrow available for use with exclusive pedestrian phasing, where there is a single pushbutton on a corner
Installation notes
Volume min/max levels are adjustable by installer.

Tactile arrow is mounted horizontally on top of device, allowing some latitude in placement of APS on pole, while still making it possible to align the arrow parallel with the associated crosswalk.

Manufacturer is developing a model that is programmable on the street, using a PDA-type device. The new model will have these additional features:
  • Long button press to request louder walk signal followed by louder locator tone for the subsequent clearance interval.
  • High-contrast tactile arrow.
Prisma Teknik, Tibro, Sweden

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