Copper rails instantly accelerate you to maximum speed

[arctlw]

It seems like the copper rails don't apply an acceleration but rather sets the speed to maximum. I was wondering if the acceleration factor could work like normal powered rails? I'm would like to use these rails with high speed rail (sets maximum speed to 40blocks/second if on gravel) and these already work great. It would feel a tad less jarring if it didn't suddenly jump your speed from 0.1 bps to 40 bps from just touching the cart.

Thanks!