Railroad Signal Systems Have
1,200 Wires Per Interlocking
The Challenge
Wire run lists diverge from as-built conditions
Engineering wire run lists show the design. As-built conditions change during installation. Paper lists get hand-marked but the final as-built documentation is never clean.
Relay test records scattered across forms
Each relay needs multiple tests — pickup voltage, dropout voltage, timing, and contact resistance. Paper forms for 96 relays create stacks of documents that cannot be cross-referenced.
Insulation resistance readings not trended
Insulated joint resistance must be measured and documented. Paper readings cannot show whether a joint is degrading over time because historical data is buried in filing cabinets.
Circuit plan verification is a one-time event
Signal circuit plans are verified once during cutover. Post-cutover modifications are hand-drawn on field copies. The official circuit plans drift from reality within months.
The POD Advantage
Voice-documented wire landings
Speak each wire landing as you terminate it — wire number, terminal designation, cable ID. POD builds the as-built wire list in real time as installation progresses.
Relay test tracking
Every relay test result linked to the specific relay by location and function. All test parameters in one record — pickup, dropout, timing, contacts — searchable by relay or location.
Resistance trend tracking
Insulated joint and track circuit resistance readings trended over time. POD shows degradation patterns that predict failures before they create signal false-proceeds.
Living circuit plan verification
Field modifications documented as they happen and linked to the circuit plan. POD maintains the as-modified record so circuit plans never drift from reality.
Signal System Intelligence
“We found a wire landed on the wrong terminal during testing. The paper wire run list showed the correct terminal but the actual wire was one position off. If we had voice-documented each wire landing, we would have caught it during installation.”
— Signal Maintainer, Class I Railroad
Industry-Specific KPIs That Update Themselves
POD tracks hundreds of KPIs from a 5-minute voice report. Here are just 2 of them.
Safety Performance
Earned Value Performance
Both cost and schedule under pressure
These update in real time from a 5-minute voice report. No spreadsheets. No data entry.
Frequently Asked Questions
Document Every Wire in the Signal System
See how POD captures signal system installation data with zero-error documentation.