1. Directorate General of Highways, (1993). Indonesian Highway Capacity Manual Part-1 (Final Report). Ministry of Public Works, Jakarta.
2. Directorate General of Highways, (1993). Highway Capacity Manual in Indonesia. Jakarta.
3. Directorate General of Highways, (1997). Indonesian Highway Capacity Manual. Jakarta.
4. Highway Traffic Analysis and Design;Salter,1974
5. Traffic Engineering. Handout, Civil Engineering, Faculty of Engineering;Susilo,1993