Belgium for Irish Drivers — the Side Switch No One Warns You About

What does an Irish driver need to drive in Belgium? A licence and a passport, and nothing more on paper. The Irish card is an EU licence, so no IDP is needed. The whole challenge sits in one place: you have spent your driving life on the left, and Belgium runs on the right.

The side switch is the headline

Ireland drives on the left; Belgium drives on the right. Every instinct you own points the wrong way. The danger window is your first hour. Roundabouts now run anticlockwise, you drift toward the kerb you are used to hugging, and the glance-before-pulling-out reflex sends your eyes in the wrong direction. Pick up the car and do your first stretch on a quiet road, not the Brussels ring (R0), which merges fast and unforgivingly.

Priority to the right catches Irish drivers out

Belgium applies priorité à droite, and Irish give-way habits do not prepare you for it. At an unmarked junction, a car emerging from a road on your right has priority, even when you feel you are on the main road. Locals pull out expecting you to brake. The yellow diamond sign tells you that you have priority; without it, assume you may not. When in doubt, yield to the right.

Getting through the first day

If you arrive by ferry or air with a hire car waiting, start with a short, quiet loop. Keep your passenger’s help for the first junctions: someone calling “right side, right side” before each turn costs nothing and prevents the commonest mistake. Remember where the indicator is, because on a left-hand-drive car the stalks sit differently from what you know. Leave the Brussels ring until the second day, and do not follow a satnav into a one-way street without checking the signs.

Limits against Ireland’s

Ireland changed local roads to 60 km/h in February 2025, but Belgium’s rural figures are regional: 70 km/h in Flanders and 90 km/h in Wallonia, so the limit can jump when you cross a regional boundary. Fixed and average-speed cameras are common.

What the fines look like

A first-band overspeed (10 km/h over) costs EUR 58, 20 over costs EUR 116, and 30 over costs EUR 179 or a court appearance. Those are well below Ireland’s fixed charge of EUR 160 with 3 penalty points. Phone use and red lights are another story: EUR 174 each in Belgium, against EUR 60 and EUR 80 in Ireland, and an unbuckled belt is EUR 116 against EUR 60. So the Belgian tariff is gentler on speeding and heavier on distraction.

Required kit and signs in three languages

Belgium requires a warning triangle, reflective vest, first aid kit and fire extinguisher in the car, where Ireland only recommends them. A hire car should carry them, but check. Signs flip between French, Dutch and German depending on the region, so Liège, Lüttich and Luik are the same city.

Alcohol

The limit is 0.05, the same figure as Ireland, so there is no recalibration. The difference is enforcement: breath tests are routine at the roadside. Do not drink if you are driving.

Emergency numbers

112 works, as in Ireland. Belgium also has separate lines: 101 for police and 100 for an ambulance or the fire service.

The full rules are on our Belgium driving guide, and you can confirm you need nothing extra with the Driving Permit Checker. Use the Speeding Fine Calculator before you set a cruise speed.