Yahappynow t1_irxwqhl wrote on October 11, 2022 at 9:16 PM

Reply to comment by bookoocash in Traffic Calming in Remington by BMFO20832

The flex posts are not rigid because busses and other long vehicles need to be able to run them over.

todareistobmore t1_irxz9py wrote on October 11, 2022 at 9:33 PM

Buses shouldn't need to run them over. AFAIK, the only flexposts that are meant to be permanent are there for emergency vehicle access (which itself shouldn't be necessary, but BFD isn't a fan of smaller trucks in general).

Yahappynow t1_irxzrlq wrote on October 11, 2022 at 9:36 PM

I guess, if those pylons at R House were rigid, a lot of busses and trucks I've seen would be totalled.

bookoocash t1_iry2fk1 wrote on October 11, 2022 at 9:55 PM

Trucks and other buses in cities across the globe can navigate turns like that. Why can’t we?

Yahappynow t1_iry6b0v wrote on October 11, 2022 at 10:23 PM

First I should say that as long as the person in the opposite lane of the road I'm turning onto stops at their stop line, I have no trouble making the turns in my personal vehicle. To your question about busses, the right turn from 29th onto Remington has a corner radius ~5' and an effective turning radius, including the use of the southbound lane, at ~15.' Busses apparently need 21.5' or more inside turning radius, implying these intersections were designed for busses to drive over the pylons when turning. An interesting note is that at 15' radius and the minimum given side friction factor, I get 8.5mph as the design speed for that turn.