The increase of the population growth in Indonesia causes an increase of the traffic volume on the road. With the increase of the traffic volume, it is necessary to improve the quality of the road construction, especially from the pavement layer quality. On the road that have moderate traffic volume to high traffic volume, several problems in the pavement layer are often found. One way to decrease the road damage is by improving the quality of the asphalt mixture, which means increasing the asphalt quality. The research design is conducted by testing the characteristic of Asphalt Pen 60/70 and also the Asphalt Pen 60/70 mixed with gilsonite additive at 4.5%; 5.5%; 6.5%; 7.5%; and 8.5% of the asphalt weight. The Asphalt Pen 60/70 mixed with the gilsonite additive is called as the modified asphalt. Based on the testing results, it is obtained that the characteristic of modified asphalt has a better asphalt characteristic than the Asphalt Pen 60/70. The percentage of gilsonite level that still meets all the modified asphalt requirements is at the percentage of 6.5% with ductility value >140 cm, 336°C flash point, 54.5°C softening point, 1.037 gravity specific, and 41 penetrations. Besides, the 7.5% and 8.5% gilsonite levels have better asphalt characteristic than the Asphalt Pen 60/70.

Jalan Soekarno Hatta merupakan jalan arteri primer yang sering terjadi kecelakaan. Lokasi kecelakaan paling tinggi di Jalan Soekarno berdasarkan penelitian sebelumnya (2018) terdapat pada 2 STA. Salah satu upaya untuk menekan jumlah kecelakaan berdasarkan faktor lingkungan dengan memasang rambu lalu lintas pada jalan yang rawan kecelakaaan. Sehingga dilakukan terhadap standardisasi identifikasi rambu yang terpasang berdasarkan PM No.13 Tahun 2014 dan pengujian tingkat retroreflektifitas rambu dengan menggunakan alat RetroSign berdasarkan ASTM D4956-04. Rambu yang terpasang di 2 STA tersebut berjumlah 14 buah rambu dengan persentase rambu yang memenuhi standardisasi rambu lalu lintas sebesar 28,57% dan persentase tingkat retroreflektifitas rambu sebesar 7,14%.

Concrete which affected with high temperature will lost its strength significantly by 60%. To overcome this problem is utilizing steel industry waste, that is Ground Granulated Blast Furnace Slag (GGBFS) which is used as a substitute for cement in concrete mixtures. The properties of GGBFS which is cementitious same as cement, so that it can fulfil the function of cement. In this research, GGBFS concrete and normal concrete with strength of concrete is 30 Mpa and both types of concrete will be burned at a temperature of 600°C for 2 hours. After that, characteristics strength of concrete will be tested to GGBFS concrete and normal concrete in each concrete before being burned and after being burned. The result of this research, there was an insignificant increase in strength of concrete with GGBFS as a substitute for cement by 40%. The average compressive strength of GGBFS concrete before and after being burned was 30.48 MPa and 11.16 MPa, compared to normal concrete which was 30.06 MPa and 9.76 MPa. Increasing also happened at the result of flexural test, wich is initial crack at GGBFS concrete occur in greater deflection and load than normal concrete.

Tumbuhnya pusat-pusat kegiatan baru menyebabkan tingginya bangkitan/tarikan perjalanan. Semakin tinggi mobilitas masyarakat dalam menggunakan kendaraan bermotor, , semakin tinggi pula intensitas kebisingan, getaran, dan polusi udara yang dihasilkan gas buang kendaraan bermotor. Polusi udara ini dapat membahayakan kesehatan, lingkungan sehingga menimbulkan pemanasan global. Kemacetan lalu lintas menyebabkan buruknya kinerja yang berdampak negatif pada produktivitas ekonomi, kualitas lingkungan, dan keselamatan. Konsumsi  bahan bakar yang lebih tinggi meningkatkan biaya pelayanan dan barang sehingga polusi udara meningkat dan kondisi keamanan memburuk.  Untuk itu, dibutuhkan penguatan regulasi dan sosialisasi kepada masyarakat dalam memilih moda dan bahan bakar untuk transportasi. Kata Kunci: dampak transportasi, polusi udara.