# Safe loading bay: inside and outside traffic lights, selector and lamp — 3D demo | Stagnoli Accessories

URL: https://www.stagnoliaccessories.com/en/use-cases/loading-bay
Fonte: Stagnoli T.G. S.r.l. (Stagnoli Accessories), Lonato del Garda (BS), Italia
Aggiornato: 2026-11-06

> How to make a loading bay safe with Stagnoli products: outside traffic light for the driver, inside traffic light for the forklift operator, ASFSW230 selector and ALPDC30 LED lamp. Interactive 3D demo of the loading cycle.

Use case · Logistics

# A safe loading bay

Two traffic lights that talk to each other: one for the driver, one for the forklift operator. They are never green together. Try it yourself: turn the selector, open the bay, load the truck.

How it works

## One principle: never two greens.

Most dock accidents stem from a misunderstanding between the truck driver and the forklift driver. The Stagnoli system removes the misunderstanding: the bay has one status only, visible from both sides.

| Phase | Selector | External traffic light (driver) | Internal traffic light (forklift operator) | Lamp |
|---|---|---|---|---|
| **1 · Approach** | Red | Green pull in | Red stay out | Off |
| **2 · Loading** | Green | Red do not move the vehicle | Green enter the trailer | On |
| **3 · Closing** | Red | Red until the door is closed | Red | Off |
| **4 · Departure** | Red | Green drive off | Red | Off |
| **Emergency** | Mushroom button pressed | Red | Red | — |

**Note:** the demo shows the operating logic. Connections, interlocks with door and dock leveller and the function of the mushroom button depend on the installation: always refer to the [ASFSW230 manual](https://qr.stagnoli.com/p/DeHbLWaNxH).

The kit

## Four components, one supplier.

![2-light R/G traffic lights](https://www.stagnoliaccessories.com/web/image/298337-d7c0f19c/Stagnoli%20%C2%B7%20chronos-alu.webp)

×2

### 2-light R/G traffic lights

One outside and one inside. Chronos multi-voltage 24–230 V or Apollo at 230 V.

[Chronos](https://www.stagnoliaccessories.com/en/light-signalling/industrial-traffic-light-systems.md)

![Loading bay selector with push buttons and key switch](https://www.stagnoliaccessories.com/web/image/298338-dccd9589/Stagnoli%20%C2%B7%20baie-selettore.webp)

×1

### ASFSW230 selector

Warehouse-side control. 230 Vac, 4.6 W, −10/+60 °C.

[Manual](https://qr.stagnoli.com/p/DeHbLWaNxH)

![ALPDC30 circular loading bay lamp](https://www.stagnoliaccessories.com/theme_stagnoli_accessories/static/src/img/alpdc30.webp)

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### ALPDC30 / 50 lamp

30 or 50 W LED, AC 100–277 V, IP65. Alternatively the flexible ALPDF20 (20 W).

[Manual](https://qr.stagnoli.com/p/epun6Nb7c4)

![ALPDB100D double articulated arm](https://www.stagnoliaccessories.com/web/image/297956/alpdb100d.webp)

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### Articulated arm

Single or double, 100 or 150 cm.

[Quote](https://www.stagnoliaccessories.com/en/contacts?tema=semafori&prodotto=Baie%20di%20carico)

![Operator with pallet truck in a loading bay with green traffic light and lamp on arm](https://www.stagnoliaccessories.com/theme_stagnoli_accessories/static/src/img/app-baie-int.webp)

Warehouse side: green internal traffic light, lamp on the arm, control panel.

![Two loading bays with external traffic lights next to the dock doors](https://www.stagnoliaccessories.com/theme_stagnoli_accessories/static/src/img/app-baie-ext.webp)

Yard side: one external traffic light per bay.

Frequently asked questions

## What warehouse managers ask us.

**D: Why two traffic lights and not one?**

One talks to the driver, the other to the forklift operator. They are always in opposite states: if the forklift can enter the trailer, the truck must not move, and vice versa. A single traffic light can't say two different things to two people.

**D: What voltage is needed?**

The ASFSW230 selector runs on 230 Vac. The traffic lights can be Chronos (24–230 V, detects the voltage by itself) or Apollo in the 230 V version. The dock lights accept 100 to 277 Vac.

**D: Can it be integrated with the door and dock leveller?**

Yes, that's the most common case. Interlocks depend on the door and leveller control panels: [open a ticket](https://www.stagnoliaccessories.com/en/support?p=ASFSW230) with your system diagram and our technical department will show you the connections.

**D: How much does a system like this consume?**

Very little: two 230 V LED traffic lights draw about 5 W per lit light, the selector 4.6 W. The main item is the lamp, only on during loading. Do the maths with the [energy impact calculator](https://www.stagnoliaccessories.com/en/docs/calculators/energy-impact?preset=baia).

## Let's make your bays safe

Tell us how many bays you have, whether the door is already automated and how you power the control panel: we'll send you the kit and the diagram.

[Contact us](https://www.stagnoliaccessories.com/en/contacts.md)

[+39 030 9139511](tel:+390309139511)