GCR Rules
The rules from the GCR applying to Improved Touring cars mostly involve safety and basic setup. The GCR specifies the construction, fabrication, and material used in installing a roll-cage, for example. It also explains the rules of the road during racing events, including the flags and right of way rules for passing maneuvers.
Improved Touring is intended to provide a low barrier to entry by using a set of rules which limit modification of the cars while keeping the cars safe for competition. To this end, the cars are production-based models built after 1964 with a reasonable amount of limited modifications. The cars are run as-built by the manufacturer, except for modifications specifically allowed by the GCR or the ITCS.
The Improved Touring category is broken into five classes based on the performance potential of the car. Those classes are Improved Touring A (ITA), Improved Touring B (ITB), Improved Touring C (ITC), Improved Touring S (ITS) and Improved Touring R (ITR).
These basic rules make Improved Touring a popular class, since familiar and modern cars race together in groups which maximize the chances for a close finish.
Read more about this topic: Improved Touring
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