The road's missing link that will connect its Tagaytay and Calamba sections is under construction.

[4] The segment of road from its western terminus at Tagaytay Rotonda to Ligaya Drive, both in Tagaytay, forms part of National Route 421 (N421) of the Philippine highway network, while the rest of the road remains unnumbered.

[1] The road continues at the southwestern boundary of Calamba, Laguna, running east from the northern gate to Tagaytay Highlands.

[5] Based on a 1941 map by the United States Coast and Geodetic Survey, it was supposed to connect Tagaytay to Santo Tomas, Batangas,[6] but the plan did not materialize as it was later apparently realigned towards Calamba, Laguna, thus assuming the name Tagaytay–Calamba Road.

On March 15, 2017, Representatives Abraham Tolentino (Cavite–7th) and Celso Lobregat (Zamboanga City–1st) filed House Bill No.