Most trucks built by Volvo have been designed for a wide variety of different transport tasks and for global use. Sometimes national legislation has forced the introduction of very special trucks designed for one single country and built in fairly limited numbers.
Perhaps the most unique special legislation has traditionally been enforced by Switzerland, for a number of reasons. Switzerland's special landscape and road conditions (including severe winters) have necessitated restricting the width of the vehicles to 230 cm, while most European countries have always permitted a maximum width of 250 cm (today 260 cm for refrigerated transport).
The hilly landscape and other factors (including the need to restrict the efficiency of trucks in favour of the railway) have also contributed to the fact that Switzerland has restricted the GVW and train weights to levels below those normally valid for other countries.
The special "CH230"
Volvo faced larger problems in this area than most other manufacturers in the late 1970s, since the designers in Gothenburg decided to make the F10/F12 truck with 'full width' (250 cm) for maximum space in the cab for the driver and his passenger, and also offer the longest possible bunk in the sleeper cab (which is of course dependent upon the width of the cab).
For this reason, Volvo decided to make a special version 'CH230' for the Swiss market, combining the F89 truck (which was made two years longer than the F89 truck in itself) with the narrow F86 front axle and a narrow N10 rear axle, thus offering a very powerful truck for an intermediate period, until a new specially adapted truck was available.