Once crossing Tlalmanalco, there is a small sign pointing a left turn to San Rafael, that incidentally takes you right to downtown Tlalmanalco. The continuation is not too obvious and a non-signaled right turn follows the block after passing downtown, so be ready to ask for directions. This request can be done days before but they require that you do it in person, since questionable fees may apply. Several bus lines leave to Amecameca from East Bus Terminal, or TAPO, in Mexico City, aproximately every 15 minutes. At second toll booth, follow indications to Chalco.
Rest is as described previously.
It is not advised to try switching buses at the toll booth, since it is not a designated bus stop. 1 km before first toll booth to Puebla, take Chalco deviation and pay a smaller fee in that new highway. Keep going straigth ahead. Amecameca is located on km 22 of this highway. Several bus lines leave to Amecameca from East Bus Terminal, or TAPO, in Mexico City, aproximately every 15 minutes.