V8Granite wrote: Wed May 14, 2025 8:27 am
ShockDiamonds wrote: Wed May 07, 2025 4:14 pm
Met some Dutch colleagues last Friday. They say that most of Amsterdam is 30k limit now. Drives them mad.
This puts you constantly side by side with cyclists which have different road layouts.
Dave!
I experienced this in both Netherlands and Belgium last year. (Whilst it's arguably no different to the UK situation, there are far more cyclists and with their flat topography they invariably tend to be going at a decent lick).
Doing some quick calculations:
> You come up behind a cyclist that is doing 15mph
> Assume that they don't increase their speed at any point, that you initially hold back 10m behind them, and want to pull back in at least 10m in front of them. And that the bike is 2m long.
> Even if you instantly increase your speed from 15mph to 20mph to perform the overtake, you'll need to be on the other side of the road for 9.85seconds to complete your move. You'll therefore need a clear gap of 88m on the other side of the road.
> If another vehicle is approaching from the opposite direction doing 20mph, they'll be covering ground at the same rate, so you'll need that other vehicle to be at least 186m away when you start your manouvre (allowing you to pull back in 10m before they pass to avoid rage creation).
Hence you very often just trundle along behind the cyclist instead.....
(Note - calculations for 30mph speed limit would be 3.3 seconds / 44m distance covered)