Recently, many friends have sent me private messages to the editor who don’t know much about some issues related to automotive software, so orange will make a summary for everyone in this regard. Interested friends can come and learn about it together. Testing is an important part of the car development process. As software is increasingly used in modern vehicles, so does the need for rigorous software testing methods. A special aspect that has been overlooked is the practice of software testing in the commercial vehicle sector with many unique features.1. DefinitionThe European Union defines a "commercial vehicle" according to the design purpose of its structure and type of equipment, any motorized road vehicle capable of carrying: a) more than nine persons, including the driver; b) cargo and standard fuel tanks [1] is classified as a "commercial vehicle" ".Light commercial vehicle (LCV) is the official EU term for commercial vehicles with gross vehicle weight 3.5 tons. Vehicles that meet this category include vans, minibuses and light trucks; heavy commercial vehicles (HCV) are those with gross vehicle weight > 3.5 tons. The official EU term for commercial vehicles, vehicles that fit into this category are vans, trucks, tankers, etc. A broader definition of HCV also includes heavy equipment and machinery including agricultural vehicles (tractors, harvesters, etc.), and construction vehicles (rock drills, bulldozers, wheel loaders, etc.).The scope of this study covers both light and heavy commercial vehicles.Market size and potentialCommercial vehicles occupy a specific and non-negligible market share in the automotive industry. According to ACEA (European Automobile Manufacturers Association) data, in 2012, more than 200,000 commercial vehicles were produced worldwide, accounting for 11.3% of the EU market. Compared with 2011, the EU-produced LCV/HCV export revenue in 2012 increased by 22.9%[3].Likewise, Frost & Sullivan [2] pointed out that the demand for light commercial vehicles in Europe has far exceeded that of other continents. Hybrid commercial vehicles, in particular, will occupy a major market share in the near future. Most of the hybrid LCVs that will be available around 2016 will include electric versions of the Mercedes-Benz Sprinter and Ford Transit Connect.The two models are expected to account for one-third of the European hybrid light commercial vehicle market.Regardless of production statistics, with a compound annual growth rate of 24% worldwide [2], all major regions are expected to maintain the growth rate of commercial vehicle telematics.2. Overview of Quality Assurance ChallengesThe trend in modern automobiles has shifted from purely mechanical to widespread electronics.A rough estimate of the number of Electronic Control Units (ECUs) in a typical modern car is about 70, including more than 1 million object code instructions and nearly 1 GB of software [4].This trend is also reflected in the d...