Which height do I enter, the one from the registration document?

No. The registration document gives the height as built. What matters is the highest point of your vehicle as you travel, including air conditioning, satellite dish, roof rails or a roof box. Measure it, and add at least ten centimetres of headroom.

What happens if a restriction is missing from OpenStreetMap?

Then Camperada will not find it. The check reveals what has been recorded; it does not replace looking at the sign. If a bridge is missing, you can add it to OpenStreetMap yourself, and everyone benefits.

Why does it say “possible restrictions” rather than “restrictions”?

Because a road with a height limit can also cross your route without you driving under it, for instance an underpass beside the road you take. Camperada shows the location with its limit, and the decision stays with you.

Does this apply to vehicles over 3.5 tonnes as well?

Yes. Weight is its own parameter in the profile and is used both for routing and for the check. For tolls, several countries switch systems above 3.5 tonnes; the planner then names the system instead of guessing at amounts.

A route that knows your dimensions

Your profile feeds into the calculation, and at the push of a button the finished route is checked against height, width and weight limits.

Motorhomes do not drive like cars, and a route planner that ignores that plans past reality. Camperada takes the height, width, length and weight of your vehicle and uses them in two places: first the route is calculated with those values, then the finished route is checked against restrictions recorded in OpenStreetMap.

Your profile feeds into the calculation

The route is calculated with your values: roads with a height, width, length or weight limit below them recorded in OpenStreetMap stay closed, and above 3.5 tonnes so do recorded lorry bans. Four figures are enough:

Height in metres, measured at the highest point as you travel
Width in metres, mirrors folded in, awning included
Length in metres, including bike rack and tow bar
Weight in tonnes, sensibly the maximum permitted weight

Beneath every calculated route it says plainly whether your dimensions could be applied. If they could not, you get a car route and you know it. That statement stays there permanently by design, rather than being a notice you dismiss once.

All of this holds whatever the weight field says. What changes above 3.5 tonnes, for tolls and vehicle classes, has a page of its own: route planner for motorhomes over 3.5 t.

At the push of a button, the route is checked

The calculation is only as complete as the data behind it. So at the push of a button, Camperada walks the calculated route once more, looking up to 50 metres either side of it for restrictions recorded in OpenStreetMap:

maxheight and maxheight:physical for clearance heights
maxwidth for narrow points and bollards
maxweight for bridges with a weight limit
maxlength for vehicle length, on hairpin roads for instance

Every location whose limit falls below your figure appears with its type, its limit and the road it belongs to, and can be shown on the map. For height and width the planner already warns when less than 5 centimetres of clearance remain, and a restriction whose value cannot be read counts as a restriction too. The planner calls them possible restrictions, because a restricted road can also cross your route without you driving under it. A warning that pretended to be certain would be more comfortable and worth less.

Where the data comes from

The restrictions come from OpenStreetMap. Camperada keeps them for the whole world itself and checks weekly for the latest available version; the result shows how current the data is. Coverage is good in central Europe, particularly for railway underpasses and old town gateways, but it is not complete. What is not mapped, no tool can know. In the end what counts is the sign on the road, and the headroom you allowed yourself when entering your height.

What this means for planning

Most surprises on a motorhome holiday do not happen on the motorway but on the last three kilometres to the site. That is exactly where the check helps: it shows you before you leave where the planned route gets tight, instead of leaving you to turn around on the spot. More on the dimensions themselves is in the guide: height, width, weight and what your motorhome needs to know for routing.

Frequently asked questions

Which height do I enter, the one from the registration document?: No. The registration document gives the height as built. What matters is the highest point of your vehicle as you travel, including air conditioning, satellite dish, roof rails or a roof box. Measure it, and add at least ten centimetres of headroom.
What happens if a restriction is missing from OpenStreetMap?: Then Camperada will not find it. The check reveals what has been recorded; it does not replace looking at the sign. If a bridge is missing, you can add it to OpenStreetMap yourself, and everyone benefits.
Why does it say “possible restrictions” rather than “restrictions”?: Because a road with a height limit can also cross your route without you driving under it, for instance an underpass beside the road you take. Camperada shows the location with its limit, and the decision stays with you.
Does this apply to vehicles over 3.5 tonnes as well?: Yes. Weight is its own parameter in the profile and is used both for routing and for the check. For tolls, several countries switch systems above 3.5 tonnes; the planner then names the system instead of guessing at amounts.

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