short straights between reverse curves

[oliverkisera]

Hello engineers, I have an alignment that some parts needs reverse curves, is it wise to add short straights between reverse curves or the super-elevation transitions can still be smooth even without the short straights, will really appreciate your responses, thanks

[Joe-Bouza · Accepted solution]

Kind of depends on the use and design speed. AASHTO and probably many DOT's in the states would want them to be a minimum length. This is so the driver eases into the opposite turn.