Vehicle-Actuated Speed Display (VASD)

Vehicle-Actuated Speed Display (VASD) is a traffic management tool used to display the speed of approaching vehicles to encourage them to adhere to the speed limit. The basic concept behind a VASD is to provide drivers with real-time feedback on their current speed. The device consists of a radar sensor that measures the speed of approaching vehicles.

The measured speed is then displayed on a prominent electronic sign or LED display board When a vehicle exceeds the predefined threshold speed (usually the posted speed limit), the VASD activates the display, which shows the vehicle's current speed. The intention is to remind drivers of their speed and encourage them to slow down, promoting safer driving habits.

VASD ANPR systems play a crucial role in enforcing traffic laws. By automatically classifying the vehicle class, reading license plates, ANPR cameras can identify vehicles that are speeding, or violating other traffic regulations. The system integrates with standard government portals for enforcing chalans . ANPR technology enables law enforcement agencies to efficiently monitor traffic and enforce compliance with road safety regulations.

Imagine VASD as your road buddy, especially on highways and in smart cities. They kindly remind you about your speed compared to the road rules. This friendly nudge encourages you to be cautious and slow down, preventing accidents from speeding. The use of VASDs is becoming increasingly widespread as more and more governments and municipalities recognize their potential to improve road safety.

A study by the Insurance Institute for Highway Safety found that VASDs can reduce speeding by up to 15%. The study also found that VASDs can reduce the number of speeding-related accidents by up to 10%. They help drivers align their speeds with their limitations by raising speed awareness and providing real-time feedback.

VASD alters behavior by encouraging thoughtful driving, which reduces speeding and elevates safety. By encouraging adherence to rules, these displays reduce violations. They also prevent collisions by lowering speed limits and boosting driver alertness. Ultimately, VASDs combine these effects to elevate road safety comprehensively, encompassing reduced speeding, collision prevention, and heightened driver awareness.


Not Found
Vehicle classification

categorizing different types of vehicles based on size like two wheerlers , four wheelers , heavy vehicles

Not Found
ANPR Solution

Automatic number plate recognition with high accuracy

Traffic Enforcement

All the infractions are logged and integrate with central law enforcement agencies like VAHAN portal

Not Found
Automatic Lane Identification

Automatic and accurate detection of Lane in multi lane scenario

Not Found
24x7 Operation

Fully optimized to work in day and night conditions

Not Found
High performance Radar

High performance 4D radar is used to detect the speeds and Lanes

Not Found
Clear Visibility

The speed signs are visible from a distance of 300mtrs . The motorist shall be well aware of speed from a distance

Not Found
Dynamic Message Broadcast

Overspeed warning messages and white flashing strobe lights for over speeding vehicles

Not Found
Highly Accurate

The system is highly accurate to achieve an accuracy of more than 95% on vehicle detection , classification and ANPR

Request a Demo

We're dedicated to creating meaningful connections that propel your success forward.


Empowering connections that drive your success.


Answer: Vehicle-actuated speed signs are electronic road signs that track a car's speed and show it to the driver in real time. These signs encourage slower driving behavior and increase road safety by giving drivers immediate feedback about their current speed.

Answer: Sensors are used by VASDs to determine an approaching vehicle's speed. Based on the vehicle's distance from the sign and the time needed to travel that distance, the displayed speed is calculated. This real-time data is then shown on the display board for the driver to see.

Answer: Some VASDs are linked to a central control system that keeps track of traffic and can remotely change the speed limits shown based on that traffic. Others operate independently with predefined speed limits.

Answer: Yes, a lot of VASDs have reflective features or lighting to help them be seen at night or in low-light conditions.

Answer: VASDs are commonly used on highways, roads with high accident rates, school zones, construction zones, and areas with speed limit changes. They are also used in smart cities to encourage safer driving.

Answer: Studies have shown that VASDs can reduce speeding by up to 15%. These tools give drivers quick feedback and serve as a reminder to follow the speed restrictions.

Answer: Yes, VASDs help prevent accidents by urging cars to slow down. Reduced speeds result in shorter stopping distances, giving drivers more time to respond to unforeseen circumstances and reducing the likelihood of collisions.

Answer: Yes, governments and municipalities all around the world are implementing VASDs because of their beneficial effects on traffic safety. Their usage continues to expand as more regions recognize their effectiveness.

Answer: Yes, VASDs can be integrated with other systems like traffic cameras, variable message signs, and intelligent transportation systems to create a comprehensive approach to traffic management and safety.

Answer: While VASDs are typically advantageous, there are certain issues, such as driver overdependence on the displays and the need for ongoing maintenance to provide accurate data and visibility.

Our Clients