Hi Mark,
I would say that there will be negligible results in redirecting these pages unless they happen to have a high number of good inbound links from other sources. Redirecting the individual pages alone is unlikely to make a huge difference to the authority / strength / rankings of the high-traffic pages you redirect to or the domain itself.
If you were to do this, I would do it with usability in mind. Do people arriving on the low traffic pages regularly bounce? Do you believe that they would be more likely to convert if they arrived on the high traffic page? I am not a CRO expert so would stop short of making CRO testing advice.
The one SEO benefit I can think of would be if those low-traffic pages are contributing to any duplicate content issues on your site and redirecting them would count as "cleaning up" the site. This is definitely not for sure, so I'd still stick with the mindset that you'd be doing this for the purpose of directing traffic, not search engines.
I hope this helps.
Jane