Road Traffic Warning Means TRIZ Cases
- Auxiliary Rail Shunting for Reliable Grade Crossing Detection
Auxiliary shunts add a controlled rail bypass to detect poor-shunting trains and trigger grade crossing warnings on time.
- UWB Subway Tunnel Personnel Detection Using Positioning Signals
Repurposed UWB positioning signals detect tunnel intrusions quickly, cutting surveillance cost and installation complexity in subways.
- Crossing Gate Alarm Circuit for Maintenance Mode Detection
An alarm circuit detects a closed cover while the gate remains in maintenance mode, preventing unsafe crossing gate operation.