Urbiotica: Magnetic Parking Sensors - Flush-Mounted or Surface-Mounted?

Magnetic sensors have become a reliable solution for detecting available parking spots in urban environments. Despite their proven effectiveness, one key question often arises: should you choose flush-mounted or surface-mounted sensors? Both systems detect changes in the magnetic field caused by the presence of a vehicle, but the most suitable option depends on factors like installation site and local weather conditions.

Both sensor types operate using cloud-based detection, ensuring precise calibration from the start. They include advanced filtering and noise-reduction systems to eliminate electromagnetic interference, offering consistent, reliable performance. What sets them apart is mainly how they’re installed — and the specific conditions they’re designed to face.

Flush-mounted sensors, embedded beneath the pavement, offer strong protection against damage or tampering, making them ideal for cities where vandalism is a concern. They are powered by long-life batteries that can last up to 10 years with no maintenance. Installation takes slightly longer — about 10 minutes per sensor, since it involves drilling into the ground — but all future interactions can be handled remotely. These sensors are also a great fit for cities facing extreme weather, such as heavy rain or snow, as they remain unaffected and don’t interfere with regular street maintenance like snow plows. And since they sit flush with the surface, they don’t create any physical obstacles.

Surface-mounted sensors, on the other hand, are easier and faster to install since they don’t require digging or civil works. They use the same type of battery as flush mounted models and don’t need wiring — the only differences are in their casing and installation method. This makes them a more cost-effective solution, especially for projects that call for rapid deployment or where altering the surface isn’t ideal. They’re also easier to access for maintenance or replacement and can be relocated if project needs change.

This type of sensor works particularly well in off-street parking areas such as shopping centers, airports, and corporate facilities. They’re also effective in rooftop lots or multi-level structures. However, they’re not ideal for places with frequent snowfall or where snow plows are used regularly, nor in areas where vandalism is a common issue.

Examples of Real-World Adaptation

The city of Monaco offers a clear example of how surface-mounted sensors can meet very specific needs. Due to the Formula 1 Grand Prix, the streets must be resurfaced every two years. Using flush-mounted sensors would mean removing and reinstalling them repeatedly — a costly and inefficient process.

Surface-mounted devices allowed the city to avoid unnecessary expenses and maintain system functionality.

In Burlington, Canada, harsh winters and constant use of snow plows called for a more durable solution. Flush-mounted sensors were chosen to withstand tough conditions and maintain the city’s smart parking guidance system year-round, without the risk of being damaged during snow removal.

In Cachoeiro de Itapemirim, Brazil, the focus was on revitalizing a blue zone to increase turnover and support local commerce. Flush-mounted sensors were also used here, this time to reduce the chances of theft or damage in an area with high vandalism rates. The solution was affordable and discreet, and with proper planning, the underground installation was completed smoothly.

Beyond detection, both types of sensors collect real-time data on how and when each parking space is used. This information is key for city officials to make informed decisions about mobility, understand peak demand times, and assign reserved spaces more efficiently.

Both technologies can be integrated into broader guidance and control systems and are compatible with a variety of other devices. This flexibility makes it easy to create tailored solutions for public streets, business premises, universities, and more.

In the end, the main difference lies in how they’re installed: one is flush-mounted beneath the surface, the other is placed on top. Otherwise, both options offer high reliability, scalability, and ease of integration for cities looking to implement smart parking solutions.

About Urbiotica

Urbiotica was born in 2008 with the mission to bring the most innovative technology to society through urban environments. Its vision is to help cities become more manageable, efficient, and sustainable, improving the quality of life of its citizens.

At Urbiotica, we focus on developing reliable IoT technologies that enhance urban mobility. Our sensors are rigorously tested to deliver high performance and accuracy in parking space management, ensuring efficient and dependable solutions.