This is often repeated, yet despite the studies on speed differentials being dangerous I am still skeptical of the more specific claim that driving the speed limit specifically when others are speeding increases your risk of getting in an accident.

It's likely often repeated because if you try driving 55 in a 55mph zone where people are driving between 62-70, it'sterrifying, it feels like you're stopped. Whether the stat is true or not remains to be seen, but intuitively, it makes a lot of sense. Sure, your risk of rear ending someone at that point is probably negligible, but the odds of being rear ended? Hard to say

When I’m driving the speed limit and everyone is going much faster I feel fine… they all just flow around me… if they weren’t able to flow, they wouldn’t be flying past.

In the UK the speed limit for goods vehicles is 10 mph below the limit for cars on motorways so there are plenty of vehicles driving below the limit.

The real risk is the opposite, cars bunched together at the same speed. This is where pileups occur, somebody at the front does something stupid and the people at the back end up colliding.

The US used to have different speed limits for trucks. Oh the benefits of deregulation!

Speed limits are set by the states, and most have lower limits (and other restrictions) for large vehicles.

Unless you have a specific claim and source for your claim?