Examine in detail the county property appraisers database.
It is very likely you will see a 'unit value' assigned that when compared to similar and different properties will reflect the very value adjustment you are seeking. The unit value will be applied to the property size and the development value stacked on top of that calculation.
It is easiest to first observe this pattern using golf course fronting or big water view properties. When you spot the pattern you can then apply it to high volume traffic locations. There is most certainly a formula that is buried in the 'disclosure' links on the websites.
When you have spent sufficient hours pillaging and plundering the appraisers and assessors database you will realize these numbers are reflected in the compilation of a value, some number that may be labeled, "Market Value," "Just Market Value," and any variation of similar words that are universally accepted as being as relevant to true values as Z's guesstimates.
IN the end the formula will not provide the satisfaction you are seeking in regards to 'TRAFFIC."
There is an obvious solution. That is simply completing a market analysis. A market analysis will produce the 'real value' numbers. You know, the real numbers - what a willing seller and able and willing buyer agree upon regarding the value of real estate.
So, may I ask, why are you wishing to make this much more difficult than it needs to be?
Call the folks who do this many, many, many times a month.