TLPI® (Turn Lane Pedestrian Indicator) is an innovative safety system designed to protect pedestrians and cyclists at intersections by actively alerting drivers to their presence in the crosswalk. Using advanced LED technology that adapts to ambient light conditions, TLPI® illuminates regulatory signs (typically R10-15) when pedestrians activate the crosswalk button, significantly increasing visibility and driver awareness. This system specifically addresses a critical safety gap where drivers are making legal turns often focus on vehicular traffic while potentially overlooking pedestrians in crosswalks, even when pedestrians have the right of way.
The TLPI® system operates through three key components: a Node installed in the pedestrian signal head that transmits 900MHz wireless signals upon button activation, the Master unit mounted on the sign that controls illumination and the LED-lit sign itself. The system is versatile enough to accommodate various intersection scenarios, including right turns on red, legal left turns with flashing yellow arrows, and nighttime or low-visibility conditions. Through SPI, the Node converts standard 120VAC (or 48VDC) power to 12VAC and communicates pedestrian phase status to the Master, which can be programmed to flash immediately upon call placement or coordinate with Leading Pedestrian Intervals (LPIs). Created with future connectivity in mind, TLPI® is designed to eventually communicate with connected vehicles, adding another layer of safety to signalized intersections.
| Item Description | TLPI® Node | TLPI® Master |
| Part Number | 507-0001 | 507-0002 |
| Item Description | Standard SPI – 120 AC | SPI XC – 120 AC | SPI – 48 VDC |
| Part Number | 501-0300 | 501-0301 | 501-0303 |
| Choose Product Options | TLPI Signal Interface Node, TLPI Sign Driver Node, R10-15 Right Arrow Flashing LED Sign, 30" x 30", R10-15 Left Arrow Flashing LED Sign |
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