7.1Why your vehicle matters

The app knows eight kinds of vehicle. Each one gets its own roads.

A low bridge is fine for a motorbike. It's a disaster for a travel trailer, a fifth wheel, a toy hauler or an RV. So the app plans for the size of what you drive.

Your vehicle changes four things. It changes which roads the route uses. It changes which size limits you are warned about. It changes how long a day of driving is in your trip plan. It changes which camps count as ones you can reach.

7.2The vehicles at a glance

The buttons show a short name. The full name is in the second column.

The sizes below are the standard ones the app plans for. Bikes have no size checks.

7.3Your usual rig and Vehicle for this route

There are two places to say what you drive. One is your usual vehicle. The other is for one route only.

Your usual vehicle is the one you normally travel in. The app uses it for every route unless you pick another. You set it with the Vehicle button on the map, or under Your usual rig in Account.

1. Tap Menu.
2. Scroll to the bottom and tap Account.
3. Find Your usual rig.
4. Tap your vehicle. It saves straight away.
5. If you usually tow, tick Usually towing a trailer.

Under the buttons, a line shows the sizes the app plans for. It is kept with your account, so your other devices get it too.

Vehicle for this route sits in the Route tab, under the place boxes. Use it when one trip is different. Say you usually drive a motorhome, but this weekend is a day out on the bike.

1. Tap Menu, then the Route tab.
2. Scroll down to Vehicle for this route.
3. Tap the button for what you are taking.

Your usual vehicle stays as it was. If a route is already on the map, the app plans it again for the new vehicle.

A button, Use my usual rig, then shows beside the heading. Tap it to go back to your usual vehicle.

Step by step, with pictures: Keep your rig clear of low bridges

7.4Set your own height

Each vehicle starts with a standard height, set on the tall side. If yours is lower or taller, set your own. Then the app checks bridges against your real height.

Under the vehicle buttons, a line shows the size in use.

For a motorhome it reads: Planning for 13'1" tall · 40 ft long.

You set your own height in Account, for your usual vehicle.

1. Tap Menu, then Account at the bottom.
2. Under Your usual rig, tap your vehicle.
3. Tap change, next to Height.
4. Pick your height from the list. It runs from 5'0" to 14'0", in steps of 3 inches.

It saves as soon as you pick. The word (yours) shows beside it. The app then uses it for that vehicle on every route.

To go back to the standard height, open the list again and pick Standard. It is at the top.

7.5Towing a trailer

Some vehicles can pull a trailer. Tell the app when you do. A trailer makes your rig longer and heavier, and you can't easily back it out of a dead end.

1. Tap Menu, then the Route tab.
2. Under Vehicle for this route, tap Truck / 4x4, Van or RV.
3. Tick Towing a trailer, under the buttons.

It adds about 20 feet and about 4,400 lb to your vehicle. It also plans you at least 11'6" tall and 8'6" wide. That is the size of a travel trailer. A bigger vehicle keeps its own size.

Towing keeps you off tight switchbacks, soft ground and rough tracks you could not back out of. Good gravel roads stay open to you.

A Travel trailer is always planned as towing. It has no tick, because the trailer is part of it.

Step by step, with pictures: Gentler roads when you're towing

7.6Trailer-safe roads and Easiest roads

When you pick a Travel trailer, an RV, or any vehicle with Towing a trailer ticked, the switches change. Prefer Twisty Roads and Avoid Highways step aside. A new switch takes their place.

It is called Trailer-safe roads. For an RV it reads RV-safe roads. It is on to start with.

It favours main roads. It keeps off steep hills, tight bends and unpaved roads where it can. It keeps off roads with signs against trailers and RVs. It keeps off roads with a size limit you won't fit.

Turn it off and you get the plain road route for your vehicle. The app still tells you about signed roads on the line.

Under it is Easiest roads, even if much further. It is off to start with. Tick it to stay on main roads and gentle hills, even when that adds a lot of distance.

1. Tap Menu, then the Route tab.
2. Under Vehicle for this route, tap your rig.
3. Leave Trailer-safe roads on.
4. Tick Easiest roads, even if much further, if you want the gentlest way.
5. Tap Plan Route.

Ticking Easiest roads turns Trailer-safe roads back on. Turning Trailer-safe roads off turns Easiest roads off too.

After you plan, look under Warnings in the Route Summary. A card says Planned for your rig, not for the shortest way. It explains why the route may be longer. It gives the steepest hill on it, as a percentage.

Step by step, with pictures: Gentler roads when you're towing · Choose the kind of road you want

7.7The limits the app checks

Some roads have a posted limit. That is a sign that says how tall, wide, long or heavy a vehicle may be. The app reads these limits from the map and compares them with your vehicle.

A rig here means a travel trailer, an RV, or anything towing.

A van or truck on its own gets the warnings, but the route is not moved for them.

Warnings show under Warnings in the Route Summary. The spot is marked in red on the map. Tap the mark to read the posted limit and your size.

A low bridge or height bar on the line needs signal to check. With no signal, the app still keeps off the signed roads it has stored on your phone.

What the app does not check:

• Signs that are not in the map. Many real signs are missing from it.
• Your load. Anything on the roof is up to you.
• Weight per axle, and bridges with no weight sign in the map.
• Tight turns, steep driveways and low trees beside the road.
• Width, length and weight you set yourself. Only the height can be changed.

Step by step, with pictures: Keep your rig clear of low bridges

7.8Bikes and side-by-sides

Pick Enduro for a road registered enduro bike. The route goes looking for the hardest tracks. Prefer Dirt Roads turns into Hardest Tracks, which goes further still.

Pick ADV moto for an adventure bike with bags. It favours good gravel and forest roads. Hard tracks are a last resort.

Pick SxS for a side-by-side. Rough ground is the goal, and the route never uses freeways.

Pick Bicycle for a pedal bike or an e-bike. The route uses bike paths, river paths and quiet roads. It hides the road switches, because a bike route never uses freeways anyway.