Call for action as speed limit assist tech fails real-world tests

Intelligent speed assist misreads up to one in four sign changes, prompting safety body to call for tougher rulesA major UK safety body is calling for revisions to the way in-vehicle speed limit recognition technology is tested and approved after its own tests revealed serious inaccuracies. 
Intelligent speed assist (ISA) is one of a number of safety technologies collectively known as advanced driver assistance systems (ADAS). It has been a mandatory fitment in new cars sold in the European