Opening 1: Increase speeds/types of roads
Although many people believe that increasing the speed limit on major United States highways would increase crash rates, that is actually not the case. Increasing the speed limit could actually lead to some positive effects. Some of these positive effects include shorter commute times and, surprisingly, lower crash rates. To fully understand the idea of how increasing speed limits would help, it is important to be knowledgeable on the different types of roads and which types of roads would be reasonable to increase the speed limit on.
Opening 2: GPS limiting
Introducing new technology such as GPS speed limiting could substantially decrease the number of speed related crashes. As many people drive long commutes home everyday, it is important to keep them driving at safe speeds. As people try to get home as quickly as possible, they sometimes forget about speed limits or more commonly ignore them. Disobeying the speed limit puts the driver and all others around them in danger, but implementing speed limiting technology could help decrease this danger.
First a note on how to effectively trim your language, Runner.
Your first three sentences
can easily be combined into:
Once you’ve established that your thesis, explained in your first sentence, pertains to MAJOR US HIGHWAYS, there’s no longer any need to describe other types of roads and driving conditions.
I’m intrigued by your second version. Is “GPS limiting” a technology that physically prevents cars from exceeding the speed limit? It’s tempting. Would it also prevent a sudden acceleration that a driver might need to avoid a crash?