1. Before the uphills: taking off.
When I-See knows an uphill is coming, it lets the speed increase, approaching the upper speed limit, to gain momentum. The truck can stay longer in a higher gear.
2. On the uphills: keeping from downshifting.
When climbing, I-See uses its stored knowledge to avoid unnecessary downshifts towards the top. You approach the crest smoothly without wasting fuel in a lower gear.
3. On the crests: staying calm.
When approaching a downhill, I-See keeps the truck from accelerating unnecessarily.
4. Before the downhill: rolling on.
Just before the slope, the driveline temporarily disengages, allowing the truck to roll. This saves energy, and minimises the need for braking.
5. On the downhills: braking in time.
I-See knows when the slope ends. Thus, when gaining speed downhill, it can apply the engine brake gently in time – instead of abruptly at the end – to prepare for the upcoming topography.
6. In the hollows: some extra schwung.
When a downhill is followed by an immediate uphill, I-See really comes into its own. It lets the truck roll, gaining speed and momentum to climb uphill with less effort.