Vehicles and bikes terrain question

[exeteroborach]

Hi everybody.
So playing a game and a situation came up. 
So the terrain trait Breachable has to do with Infantry, Swarms and Beast being able to move through terrain instead of going over it.  
Scaleable has to do with Infantry, Beasts and Swarms and Fly being able to be set up and end movement on upper levels of terrain. Doesn't say anything about moving over said terrain. 
Rules for movement say if a terrain feature is more than 1 inch tall you have to measure up and down for the movement. Doesn't say anything about keyword bikes/monsters/vehicles not being allowed move over terrain at all.
So my question is:
Can bikes, monsters and vehicles move up, across and down a barricade that is about 5 inches tall and 1 inch wide if it has enough movement to climb up and down and clear it? Even if it doesn't seem like it could realistically, rules as written, is it legal? 
My friends are saying that my biker cant go over the terrain because it isnt' classified as breachable or scaleable. 
Thanks for reading. 

[piersonsmuppet]

You are able to move over any terrain that doesn’t have breachand scalable so long as you have the movement to move up, across, and down the terrain ending in a legal position for the model.

Your friend was incorrect.

Edit: see “moving over terrain” in the advanced rules for movement.