Earlier quoted context omitted.
To all the folks replying that someone will fill the gap in front of you: that’s the point. It isn’t about reaction time. It’s about letting traffic flow easier, not fighting with each other. It removes the need for your fellow drivers to feel a tension when it is time to switch lanes, to not have to make a risky maneuver. You get to relax when driving because now you aren’t competing to get to your destination, and…
At least in my city in my commute this morning (~30 minutes), I was forced to hard brake 3 times to avoid having an accident with someone wedging themself in at the end of an exit lane. I find the problem isn't people merging into your lane in front of you, but doing so badly (ie not leaving a safe amount of space behind their rear bumper and your front bumper). Semi drivers have this even worse.
There are some advantages to driving a semi in traffic:
- Lots of gears to choose from and massive torque in order to find that perfect 'idle forward' speed.
- Far more comfortable ride then a car, it's not even close.
- Radio communication with trucks ahead, so you know what's happening ahead and which lane to be in long before the cars figure this out.
- Visibility over the top of vehicles in front (except another truck, obviously).
I think the only thing better than a semi for heavy traffic might be a luxury car with adaptive cruise and a little roof-mounted drone-cam that you could launch to check out the view ahead (though this sounds like something Homer Simpson would dream up). Your own little personal traffic copter/R2D2, with a recharging dock on the roof. Someone please tell Elon Musk to make this a priority for new Teslas. It could even check out side streets in cities and find quicker routes.