> This suggest that some drivers see the message and react by adjusting their driving and that other drivers near them either do not see the sign, do not make a

> This suggest that some drivers see the message and react by adjusting their driving and that other drivers near them either do not see the sign, do not make adjustments, or are not paying enough attention to the road to notice that a driver in their hazard zone has made an adjustment that will cause an accident if they don't react similarly. This is all potentially true, but an equally valid interpretation of the limited data is that the larger sign requires more cognitive overhead, resulting in less attention given to the road. > take a defensive driving test at least every 5 years so that the lessons Yes, especially here in the US where it's really easy to get a license to drive. A cultural shift would help too, because right now it's all about "Well, it's not my fault" - as if the accident and potential fallout is less important than who bears financial responsibility. In /most/ cases, there are defensive steps a driver could have taken to avoid an accident even if they were not directly at fault, but we don't emphasize that enough. (Or at all?)