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Speed Indicator Device (SID)

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Our SID Vehicle Activated Speed Sign is designed to enhance road safety by displaying real-time vehicle speeds to drivers. With high-visibility LED displays, our SID units capture drivers’ attention, reminding them to adhere to speed limits and encourage responsible driving behaviour.

Key Features

Intelligent Optical Lens
Monitoring and Error Reporting
Energy Efficient
In Stock
UKCA certified
6 Year Warranty
4G Modem Upgrade

How Our Speed Indicator Device Works

When an oncoming vehicle is travelling over the speed limit, this sign will illuminate – showing a ‘SLOW DOWN’ message and display the speed that the vehicle is going. This will prompt drivers to correct and lower their speed making for an effective speed-calming solution.

Benefits Of Our Speed Indicator Device

Plug and Play: All our speed signs are pre-programmed to your desired settings so they are ready for installation and use straight out the box.
Low Power: The LED’s may be bright, but they’re very low power. For battery powered units, each battery will trigger an impressive 45,000 times before the battery needs changing.
Solar-powered option available: Go green with our solar power option, reducing reliance on traditional energy sources for an eco-friendly operation.
Data monitoring and error reporting: With the data-capture optional extra, you can monitor speed data from the signs, providing insights into motorist behaviour and average speeds.
Easily movable with custom post plates: Custom post plates make relocation a breeze, allowing flexible adjustment based on changing road conditions or hazards.
Certified for safety (UKCA/CE Certification): Our signs are UKCA certified and meet British and European safety and quality standards to ensure reliability and compliance with regulations.
Optional 4G Modem Upgrade: Allows remote access for data download, trigger speed changes and scheduling options.

What Our Customers Think

“Speed Indicator Devices are arguably the best thing we have done in the parish for years.”
Cllr Dave King, Hammerwich Parish Council

“The signs have been received well by local residents. They are a visible sign that our parish council is doing something positive about speeding and road safety.”
Cllr John Barnes, Calne

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What You Can Use Our Speed Indicator Device For

Speed limit reminders

Data Collection on traffic speeds

A useful tool for reducing speeding motorists and improve the safety of your roads. To keep motorists on their toes, the signs can also be relocated using multiple back-plates.

Analysing data provides insights into traffic patterns, identifies speeding areas, and evaluates speed limit measures. Information gathered plays a vital role in implementing road safety measures to create safer roads.

Temporary Traffic Management

Why not use the SID on the Mini Unit to enable easy relocation. Using the SID on road traffic sites enhances driver awareness, reducing accidents in temporary traffic areas where the road speed is temporarily reduced.

Speed Indicator Device (SID) – Technical Specifications

	SID
Digit/Roundel SIze	300mm Digit Height
Enclosure Dimensions (HXWXD)	660mm x 430mmx 150mm
Trigger Speeds	5 – 65MPH
Display On Time	0.5 – 7.5 seconds
Weight Without Batteries	8Kg
Rechargable Batteries	12V – 22Ahr (Max 2)
Typical Operating Duration (battery powered models)	1 Battery: 45,000 triggers
2 Batteries: 90,000 triggers	2 Batteries: 90,000 triggers

How To Install a Speed Indicator Device (SID)

Step 1: Select the Installation Location

Choose a suitable location for your Speed Indicator Device (SID). It should be visible to drivers and placed in an area where it can effectively monitor and display vehicle speeds. Consider factors like visibility, road conditions, and the speed limit.

Step 2: Mount the Device

Attach the Speed Indicator Device to the mounting brackets or posts using the provided hardware. Make sure the device is level and securely fastened.

Step 4: Power Supply

Connect the power source to the SID. The power source can be an electrical outlet, battery operated, or via solar panels.

Step 5: Test the System

Turn on the Speed Indicator Device and ensure that it’s functioning correctly. Test the speed detection and display features to verify that they are working as expected.

Step 6: Adjustment and Settings

Configure the device’s settings, such as the speed threshold for displaying messages or the specific messages it displays. These settings can usually be adjusted using a control panel or software provided by the manufacturer.

Step 7: Regular Maintenance

Establish a maintenance schedule to keep the device clean, check for loose components, and ensure it continues to function correctly over time.

Remember that this is a general guide, and specific requirements may vary based on the model of the speed sign, local regulations, and unique installation conditions. Always consult with professionals, local authorities, and experts to ensure a safe and compliant installation.

How Effective Are Vehicle Activated Speed Signs?

A local parish council in Tetbury reported a 24% drop in the highest speed on their targeted road within just one month of installation.The 40mph road had motorists speeding at a dangerous 61.5mph, but with an eye-catching Vehicle Activated Speed sign, this top speed reduced down to 45.7mph after 25 days of being in use.

Although the results collected from the signs cannot be used to prosecute speeding motorists, the reports and data are often used by councils and Local Highways Authorities to help set-up speeding enforcement procedures.

Date	Average Speed
29th August	38.6 mph
1st September	39.0 mph
7th September	38.8mph
17th September	28.7 mph
23rd September	28.8 mph

Date	Top Speed
29th August	61.5 mph
1st September	61.8 mph
7th September	60.4 mph
17th September	46.6 mph
23rd September	45.7 mph

“The unit is proving very successful in calming traffic through the village. The flashing signal clearly and effectively reminds drivers of the prevailing speed limit, and the data gathering function is useful in determining which sites within the village benefit most from its deployment. The unit is sufficiently portable to enable it to be rotated between separate locations on a regular basis. We are also planning to liaise with the local constabulary over the summer months, and provide data from the unit in order to help them target the most effective periods to deploy mobile enforcement cameras.”
– Kevin Beck, Parish Council in Tetbury

Product Guides

Take a closer look at our product guides and get to know more about how Vehicle Activated Speed Signs can make a difference on the roads.

Our Other Types Of Vehicle Activated Speed Signs

SAM (Speed Awareness Monitor)

Our SAM units combine radar detection with dynamic messaging to provide drivers with personalised speed feedback. SAM is an excellent choice for reducing speeding in various environments, from residential streets to work zones.

SLR (Speed Limit Reminder)

Our SLR signs are designed to reinforce speed limits and ensure drivers maintain safe speeds at all times. Equipped with high-visibility displays and intelligent technology, SLR signs provide real-time feedback to drivers, helping them stay within legal speed limits, which reduces accidents and improves road safety.

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