Recent events in Northern California have provided a useful example of the value of high quality, industrial-grade sensors. Two of the largest cities in the greater Bay Area have had sensor failure issues. In one city, ground sensors tied into meter payments were unexpectedly resetting when a heavy truck would drive by. This led to citizens complaining about receiving parking tickets when they were still paid up on the meter. Eventually the city had to replace 250 sensors that were non-working.

A second major city attempted to solve this by using sensors installed in meter poles instead, but there have been recent complaints of the same issue, sensors believing a space has turned over, leading to a meter being reset and someone being surprised with a parking ticket. One man registered complaints until his ticket balance was waived.

These issues can happen because parking sensors require significant environmental protection to be highly reliable. A city street is a chaotic environment with vibration, dust, immense pressure from cars and trucks, and even weather extremes. That’s why Streetline’s industrial sensors are fully epoxied, IP67 rated, and are guaranteed to last over 8 years in any environment.

Large vehicles can cause a shift in the ambient magnetic fields that can look like an arrival/departure to a single magnetometer, causing a sensor to give false reports. To overcome this Streetline relies on Sensor Fusion, a hybrid model of multiple sensing devices to filter out issues like changes in the ambient magnetic field.

Parking enforcement must have highly reliable data to retain public trust in its fairness, and highly reliable data requires highly reliable sensors.