Why aren't mudflaps on cars a legal requirement?

In article ,
says...

On Sat, 27 Apr 2019 21:02:11 +0100, "Commander Kinsey"
wrote:

On Sat, 27 Apr 2019 20:50:47 +0100, pensive hamster wrote:

On Saturday, 27 April 2019 20:37:50 UTC+1, Tosspot wrote:
On 27/04/2019 19.20, Commander Kinsey wrote:
Why aren't mudflaps on cars a legal requirement? They would severely
cut down on the spray on a wet motorway.

Get some decent windscreen wipers you pikey. Honestly, welcome to the
21st century.

It seems a reasonable question. There are some Spray Suppression
requirements for lorries:

https://www.gov.uk/government/public...t-a-pass#spray

They make up all sorts of stupid rules for cars but neglect the obvious. You only need to drive once on a motorway in the pouring rain to see the mess made by cars without flaps.

You neglect the obvious laws such as speeding/tailgating/drunk-driving
and you're banging on about stupid rules for mudflaps???

Hint: if you're getting sprayed by the car in front, you're too
****ing close (see under 'tailgating' above).

Well, yes.