关于这个问题，剑雅阅读能给我们答案：
One frequently cited motive is safety; indeed, research at the UK’s Transport Research Laboratory has demonstrated that more than 90 percent of road collisions involve human error as a contributory factor, and it is the primary cause in the vast majority. （例句出处：C15）
写法：独立句子；独立句子.
解析：分号后的独立句子细节解释前一个句子
Some were located in or near villages as public spaces for the community; Others were positioned beside roads as resting places for travellers. （例句出处：C10）
写法：独立句子；独立句子.
解析：分号前后的句子构成对比，分号相当于while/whereas
Rubin and colleagues did not assign greater weight to any one dimension in determining playfulness; however, other researchers have suggested that process orientation and a lack of obvious functional purpose may be the most important aspects of play. （例句出处：C14）
写法：独立句子；副词, 独立句子.
解析：分号前后的句子构成转折，分号可以改成句号，however另起新句
These include the technical difficulties in ensuring that the vehicle works reliably in the infinite range of traffic, weather and road situations it might encounter; the regulatory challenges in understanding how liability and enforcement might change when drivers are no longer essential for vehicle operation; and the societal changes that may be required for communities to trust and accept automated vehicles as being a valuable part of the mobility landscape. （例句出处：C15）
写法：独立句子；独立句子；连词+独立句子.
解析：分号前后的两个句子构成并列，相当于中文的排比句