Introduction: Hikvision Radar Speed LED Display (YJP5474-28-1-R)
The Hikvision YJP5474-28-1-R, marketed as the Radar‑Assisted Speed LED Display, is a compact roadside feedback unit designed to reduce speeding by giving drivers immediate visual feedback. Combining a millimetre‑wave radar sensor with a high‑brightness bi‑colour LED panel, this pole‑mounted device shows approaching vehicle speeds in clear numeric form and highlights speeding with a red "SLOW DOWN" alert. Built for all‑weather outdoor use and low power consumption (12 VDC), the YJP5474‑28-1‑R targets councils, contractors and site managers who need an effective, rugged speed‑calming tool.
Key features at a glance
- Radar detection:Millimetre‑wave radar covering 20–100 m and supporting up to 64 targets.
- Bi‑colour display:Numeric speed readout (2–99 km/h) with green for compliance and red + "SLOW DOWN" for offences.
- Configurable:Speed thresholds, units (kph/mph) and display duration (1–8 s) are adjustable via front dials for rapid site setup.
- Low power & rugged:12 VDC operation, average ≈13 W, IP65 enclosure rated for −30 °C to 70 °C.
- Integration ready:1 × RJ45 100 Mbps Ethernet and support for private protocols to interface with existing systems.
Detailed specifications and benefits
The heart of the unit is its millimetre‑wave radar, designed for reliable detection in varied conditions. With a detection distance of 20–100 m and the ability to track up to 64 targets, the system is suitable for single‑lane and multi‑lane approaches where traffic flow varies. Horizontal and vertical detection angles (±22° horizontal and ±10° vertical) help ensure useful coverage without excessive false detections from adjacent lanes.
Benefit: long‑range, multi‑target capability improves accuracy of feedback and reduces missed vehicles, making the sign more effective in higher‑speed or multi‑lane locations than short‑range units.
The display uses a dense LED array configured as a bi‑colour panel. Speed digits (2–99 km/h) are formed by 168 red + 168 green LED beads, while the prominent "SLOW DOWN" legend uses 147 red LED beads. The LEDs meet high brightness specifications (red 4,500–7,200 mcd; green 6,000–10,800 mcd) and deliver central brightness between 150–400 cd. Visual angle is ≥ 30°, and LED life is rated at ≥ 100,000 hours.
Benefit: bi‑colour presentation (green for compliance, red + wording for speeding) provides immediate, intuitive feedback to drivers, improving the chance of speed correction compared with monochrome signs.
Powered by 12 V DC with average consumption around 13 W (max ≈15 W), the unit is suitable for mains DC installations and some battery/solar setups when paired with appropriate power management. The housing is galvanized steel with electrostatic spray and reflective film finishes, rated IP65 for dust and water resistance, and rated for operation from −30 °C to 70 °C with 5–95% non‑condensing humidity tolerance.
Benefit: low power draw and rugged build reduce operating costs and maintenance needs for permanent roadside installations in harsh climates.
An RJ45 100 Mbps Ethernet port supports integration into traffic networks and remote management using private protocols. On‑device dials allow quick, on‑site configuration of speed thresholds, units (kph/mph) and display durations (1–8 s) without specialist tools.
Benefit: straightforward local setup and network capability give flexibility for both standalone speed calming and integration into broader traffic monitoring schemes.
Use cases and scenarios where the YJP5474‑28-1‑R excels
- Local authority traffic calming:Install at known speeding hotspots—residential streets, accident‑prone bends or gateway locations—to provide immediate driver feedback that supplements enforcement and engineering measures.
- School routes and pedestrian zones:Effective at drop‑off/pick‑up times where transient speeding can endanger children. The prominent red "SLOW DOWN" prompt helps create a visual deterrent.
- Temporary and construction sites:Use at temporary works entrances/exits where traffic mixes with pedestrians or slow‑moving vehicles; the compact form and configurable thresholds suit temporary deployments.
- Private estates and industrial sites:For entrances or internal roads where speed limits are enforced for safety, the display helps change driver behaviour without direct enforcement.
- Integration with monitoring schemes:When connected via Ethernet, the unit can be part of a cluster of signs and reporting systems, feeding data back to traffic management centres for trend analysis and targeted interventions.
Comparisons with similar products
Static speed limit signs are passive and depend on driver compliance; they provide no real‑time feedback. The Hikvision radar display actively measures and responds to vehicle speed. This dynamic feedback generally produces better compliance than static signage alone, particularly when paired with enforcement or education.
Many radar speed signs use a single colour (often amber or red) to show speed. The bi‑colour approach on the YJP5474‑28-1‑R—green for within limit, red + wording for speeding—gives clearer, faster comprehension for drivers. The numeric accuracy (±2 km/h) and readable digits across a wide visual angle also give an edge in recognisability.
Large VMS units offer rich messaging and higher visibility but are bulkier, more costly and require more power and infrastructure. The Hikvision unit is a focused, lower‑cost alternative for specific speed feedback tasks where full VMS capability is unnecessary.
Solar variants can be ideal where mains power is unavailable. The YJP5474‑28-1‑R is a 12 VDC device with modest power needs, so it can be adapted to solar installations with appropriate battery and charge controllers. However, contractors should size power systems carefully for consistent operation in low‑sun conditions.
Customer testimonials and reviews
At the time of writing, no verified customer testimonials or published reviews specific to the Hikvision YJP5474‑28-1‑R were available in public product literature. For impartial feedback, prospective buyers should request case studies or references from suppliers or consult local authorities and contractors who have deployed Hikvision radar signs.
Typical feedback for radar speed displays of this class commonly reports:
- Noticeable short‑term speed reductions at installation sites.
- Higher compliance when displays use clear colour‑coded messaging (green/red).
- Positive reception from communities near schools and residential zones for non‑enforcement, behavioural interventions.
Installation, safety and compliance considerations
YJP5474‑28-1‑R is intended for pole mounting in lane or side‑of‑lane positions. Installation should follow the Hikvision manual for mounting height, tilt and wiring. Work should be performed by qualified personnel and power isolated before wiring. When siting units, confirm local highway authority requirements and wiring regulations—permissions and documentation are often needed for roadside hardware.
Note on certification: manufacturer certification details (CE / UKCA) were not provided in the supplied data; consult Hikvision datasheets and the official product page to verify compliance and certifications required for your jurisdiction before purchase.
Value and pricing
The suggested price for the Hikvision YJP5474‑28-1‑R is 1699.0 (currency per supplier listing). With a cost price of 1114.8, the device sits in the mid‑to‑upper band for radar speed displays, reflecting its radar range (up to 100 m), bi‑colour LED performance and rugged construction. Buyers should factor in pole, mounting hardware, power supply or solar system costs, and any network integration work when evaluating total installed cost.
Conclusion: Why the YJP5474‑28-1‑R is a strong choice
The Hikvision Radar‑Assisted Speed LED Display YJP5474‑28-1‑R combines long‑range millimetre‑wave detection, accurate numeric readout and a high‑visibility bi‑colour LED panel in a compact, rugged package. Its configurable thresholds, low power draw and Ethernet integration options make it flexible for local authority traffic calming, school run safety, temporary works, and private site speed management.
While buyers should confirm certification details and consider site‑specific power provisioning, the product’s combination of range, display clarity (green/red + "SLOW DOWN") and weatherproof design make it an effective, modern tool to change driver behaviour and improve roadside safety without immediate enforcement. For authorities and site managers seeking a targeted, reliable speed feedback device, the YJP5474‑28-1‑R is a practical option worth evaluating alongside solar alternatives or larger VMS systems depending on budget and site needs.
