OSRAM Traffic signalling lamps
OSRAM Traffic Signalling Lamps — Reliable Light Sources for Road and Transport Systems
OSRAM traffic signalling lamps are engineered for high-visibility, long-life operation in road, railway, and pedestrian signalling systems. Their optical stability and vibration resistance make them standard components in public infrastructure lighting. For engineers and procurement specialists, OSRAM’s range covers halogen, incandescent, and LED-based signalling lamps — designed to maintain colour accuracy, luminous intensity, and thermal balance under continuous operation.
OSRAM Signal Light Bulbs — Traditional Performance for Certified Systems
Classic OSRAM traffic signal bulbs (230 V or 110 V versions) are still widely used in legacy intersections and transport facilities.
- Rated voltage: 110–240 V AC.
- Power range: 40–100 W, depending on housing type.
- Average service life: up to 8,000 h in continuous duty.
- Bulb shapes: A55, A60, and T45 for most E27 or BA20d sockets.
- Colour options: clear, red, amber, green, blue, white (doped glass, not external filters).
- Luminous flux: typically 400–1000 lm, depending on colour.
- Operating position: universal, vibration-resistant filament geometry.
These lamps comply with ECE R37 / EN 60064 requirements for signalling optics and are used by many European municipal operators for system maintenance and retrofit stock
OSRAM Traffic Signal LEDs — Long Life and Energy Efficiency
Modern OSRAM traffic signal LED modules provide a long-term replacement for filament bulbs while fitting standard sockets and housings.
- Power consumption: typically 4–12 W per module (up to 80 % energy savings).
- Luminous intensity: 200–300 cd per colour field, per EN 12368.
- Operating temperature: –40…+60 °C; suitable for outdoor cabinets and pole heads.
- Lifetime: >50,000 h (L70B50).
- Ingress protection: IP65–IP67 for sealed optical blocks.
- Input voltage: 100–240 V AC with internal regulation.
LED-based OSRAM traffic modules use constant-current circuits and polycarbonate lenses that keep chromaticity stable through aging — critical for regulatory compliance.
OSRAM Amber Signal Lamps — High Contrast in All Conditions
Amber light remains the reference tone for warning and transitional states in both road and industrial signalling. OSRAM amber lamps are produced with selective sodium glass filters for pure 590 nm colour output.
Typical specifications:
- Colour coordinates: within CIE tolerance for amber category.
- Flux retention: >85 % after 2,000 h continuous use.
- Shock resistance: up to 15 g (suitable for railway signal masts).
- Power range: 40–70 W incandescent or 5–10 W LED equivalent.
- Base types: E27, BA20d, GU10 industrial.
In dense fog or low visibility, amber maintains contrast against background light — a reason OSRAM lamps are chosen for traffic beacons and pedestrian crossings.
OSRAM Pedestrian Signal Lighting — Uniform Visibility and Fast Start
OSRAM pedestrian signal modules are optimised for small pictogram housings.
- Nominal intensity: 80–100 cd typical.
- Uniformity factor: ≥0.8 across surface per EN 12368.
- Response time: <100 ms (LED models), avoiding ghost or delay effects.
- Power draw: ~6 W per module.
- Lifetime: up to 75,000 h.
Their LED arrays maintain consistent chromaticity even under voltage fluctuations, meeting long-term municipal service requirements.
Technical Standards and Compatibility
- Optical classification: per EN 12368 (Traffic Control Equipment – Signal Heads).
- Thermal endurance: glass up to 250 °C; polymer LED optics up to 110 °C.
- Vibration testing: IEC 60068-2-6, up to 10–150 Hz.
- Certification: CE, ECE, and RoHS compliance.
- Mounting: standard socket types — E27, BA20d, GU10, GX53.
These parameters guarantee interoperability in existing traffic control systems and signal heads already installed across Europe
OSRAM Comparison Table
Feature | Incandescent | LED Module |
| Power | 40–100 W | 4–12 W |
| Lifetime | 2,000–8,000 h | 50,000–75,000 h |
| Warm-up | Instant | Instant |
| Colour consistency | Medium | High (SDCM <3) |
| Maintenance cycle | Frequent | 5–10 years |
| Operating temp | –20…+50 °C | –40…+60 °C |
Buyer and Installer Notes
- Voltage compatibility: verify 230 V vs 110 V supply for retrofit projects.
- Thermal design: ensure adequate ventilation in closed heads, especially with incandescent bulbs.
- LED retrofits: check internal driver range (100–240 V AC).
- Colour uniformity: use one production batch per intersection to avoid visible tone shifts.
- Inspection cycle: for LED, test luminous intensity after 30,000 h or 5 years.
- Spare policy: keep 10 % safety stock per intersection type for consistent maintenance rotation.
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