It evidently originated in JAPAN.
No other phrase more eloquently captures the essence of Japan's car industry than jishu-kisei, or "mutual self-restraint."
Either in terms of maximum engine-power output, maximum speedometer readings or speed limiters, Japan is the world leader in automotive moderation.
It all started back in the mid-1970s, when the police and government became concerned about the growing nationwide problem of bosozoku — street gangs on motor cycles and in cars who were speeding around disrupting traffic and ignoring road laws. The Japan Automobile Manufacturers' Association (JAMA) stepped in, suggesting that domestic carmakers put a ceiling on the maximum speed of all future Japanese- built vehicles by restricting the top speed markings on speedometers to 180 kph and imposing a speed-limiting device at the same speed. Once a vehicle reached 180 kph, this "speed governor" would automatically starve an engine of fuel and stop the car from going any faster.
Today, every vehicle produced in Japan for the local market comes fitted with a speed limiter set at 180 kph. Why carmakers made 180 kph their mark is not clear, but one industry insider suggested it was about the maximum speed that a standard domestically built car could go at the time. The policy was well-received by the general motoring public, who had urged authorities and carmakers to do something concrete to curb the gang problem and make roads safer. By the late '70s, a combination of police action and the speed limiters had led to a reduction in gang-related violence.
But the 180-kph limit also seemed like a good idea to the vast majority of drivers for the simple reason that the maximum speed allowed on expressways was only 100 kph anyway.
While the 180-kph speed limiter remains a uniquely Japanese phenomenon, and never ceases to generate considerable comedy among media and car enthusiasts from Europe and America — where many speed limiters engage at 250 kph — it is not the only measure of "mutual self-restraint" on the nation's roads.
Peter Lyon is a a 20-year motoring journalist who covers Japan's auto industry for more than a dozen publications worldwide.