How do I know which carriageway traffic delay warnings relate to?

Travelling home to Somerset from Heathrow along the M4 I was grateful to be warned, on numerous occasions, that there were long delays from J13 to J24 on the M5. However, these warnings did of course omit one important piece of information. Were the delays on the northbound or southbound side, or both? I suspect this is a regular occurrence and am not sure there is room on the signs for this additional guidance. To whom should I write to point out this shortcoming?

Asked on 19 October 2013 by IG, Rooksbridge

Answered by Honest John
If it says J13 to J24, that’s westbound. J24 to J13 is eastbound. There's a phone number: 0300 123 5000. Use it to let them know whenever the overhead gantry messages are clearly wrong.
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