The fixed speed cameras installed at these two locations for eastbound and westbound traffic are capturing at least 50 drivers daily who are over the speed limit.

Roads and Maritime Services issued speeding tickets worth $1.9 million in the six months from July to December last year to speeding drivers at Mount Victoria and Kurrajong Heights.

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Data from Revenue NSW showed more drivers are getting caught at Mount Victoria on the Great Western Highway, which was responsible for speeding tickets worth $1.5 million. 

Western Region traffic tactician Inspector Ben Macfarlane says people need to pay attention to the speed limits, especially through the Blue Mountains, because they do change frequently.

"People really need to be aware what the speed limit is and what speed they are travelling," Inspector Macfarlane said.

"There is certainly better visibility of speed signs on the road, especially around the school zones.

"All people need to do is pay attention."

Data showed that more people are paying attention than before.

The number of speeding violations captured by the fixed speed cameras actually came down in the six months from July to December 2018 compared with the same period in 2017.

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For instance, 586 speeding violations were captured on camera in December 2018 compared with 2017 violations in December 2017 at Mount Victoria.

Similarly, 109 drivers were caught speeding on camera in December 2018 compared with 276 in December 2017 at Kurrajong Heights.

Overall, the value of fines almost halved in the six months from July to December 2018 compared with the same period in 2017.