Inadequate access to Soekarno Hatta Airport, only via Prof. Sedyatmo Tollroad and the high volume of vehicles especially passanger car often cause traffic jams during rush hour. The government added access to Soekarno Hatta Airport by operating airport trains. This research aims to analyze the characteristics of passenger car users and airport train users, analyze the opportunity of mode choice between that two modes, and determine the airport trains service according to the users. The data obtained by distributing questionnaires to passenger car users and airport train users. The characteristics of users of each mode were analyzed using descriptive statistics. To determine the probability of moda choice, the binary logit difference model is used with the help of multiple linear regression. Airport train user perceptions of airport train facilities and services were analyzed using a Likert scale. The characteristics of passenger car users are women, age <25 years old, educated bachelor degree, income <Rp. 3,000,000 with the purpose of a family visit. The characteristics of airport train users are men, aged <25 years old, educated bachelor degree, earn Rp. 3,000,000 - Rp. 5,000,000 that travel with the aim of business/work. Probabilities for passenger cars were 85.98%, while airport train probabilities were 14.014%. The level of airport train services in aspect of safety and convenience is in a good category, and aspects of comfort and reliability are categorized very wellKey words : binary logit difference, characteristic of trip users, Likert scale, transportation moda choiceABSTRAKAkses menuju Bandara Soekarno Hatta yang belum memadai yaitu hanya via Jalan Tol Prof. Sedyatmo dan tingginya volume kendaraan jenis mobil penumpang sering mengakibatkan terjadinya kemacetan lali lintas pada jam-jam sibuk. Pemerintah menambah akses menuju Bandara Soekarno Hatta dengan mengoperasikan kereta api bandara. Penelitian ini bertujuan untuk menganalisis karakteristik pelaku perjalanan mobil penumpang dan kereta api bandara, menganalisis peluang pemilihan moda antara kedua moda tersebut, dan menentukan kelayanan kereta api bandara menurut masyarakat pengguna. Data diperoleh dasi hasil penyebaran kuesioner kepada pengguna kereta api bandara danmobil penumpang. Karakteristik pelaku perjalanan masing-masing moda dianalisis menggunakan statistik deskriptif. Untuk mengetahui peluang pemilihan moda digunakan model logit biner selisih dengan bantuan persamaan regresi linear berganda. Persepsi pengguna kereta api bandara terhadap fasilitas dan kelayanan kereta api bandara dianalisis menggunakan skala Likert. Karakteristik umum pengguna mobil penumpang adalah wanita, berusia <25 tahun, berpendidikan S1/D4, berpendapatan <Rp. 3.000.000 dengan tujuan perjalanan kunjungan keluarga. Karakteristik umum pengguna KA bandara adalah laki-laki, usia <25 tahun, berpendidikan S1/D4, berpendapatan Rp. 3.000.000 – Rp. 5.000.000 yang melakukan perjalanan dengan tujuan dinas/bisnis/kerja. Peluang mobil penumpang yang diperoleh sebesar 85,986%, sedangkan peluang KA bandara 14,014%. Tingkat pelayanan KA bandara dalam aspek keamanan dan kemudahan berkategori baik, dan aspek kenyamanan dan keandalan berkategori sangat baik.Katakunsi : karakteristik pelaku perjalanan, logit biner selisih, pemilihan moda transportasi, skala Likert

Abstract This research meant to observe impact of aggregate gradation with two kind of asphalt towards asphaltic concrete properties. Asphalt Cement Wearing Course research which is applied to aggregate gradation above and below Restriction zone according to Bina Marga December 2005 specification. Both of asphalt has same viscosity but come from different resources suggest different behavior at temperature impact. Laboratory test do to determine void in mineral aggregate, void in mixture and void filled with asphalt, stability and flow occurred. The conclusions are: (1) For two kind of asphalt Pertamina and Shell, aggregate gradation above restriction zone better than below, however some result does not show any patron. (2) Two kind of asphalt with same penetration have same asphalt optimum percentages, 6 - 6,5%. (3) Aggregate gradation above restriction zone has 1312 kg -812 kg stability with 3,97% - 3,93% void in mixture with 10% filler. (4) Refusal test for two kind of asphalt’s result shows that smallest void in mixture and biggest void filled with asphalt occur at above restriction zone. Keywords: aggregate gradation, restricition zone, void, stability, flow.

The concrete as surface pavement is more durable than asphalt pavement, while requiring less maintenance and having longer life. This paper discusses about the benefits of rigid pavements utilizing steel fiber upon receiving vehicle load. The study aims to improve the performance of concrete used as rigid pavement with 0.5 water/cement ratio by adding hook-shaped steel fibers. In this study, the amount of steel fiber varied, ranging from 0 to 15% based on trial and error. The hook-shaped fibers used were manufactured from steel in factory. Performance of samples were conducted in laboratory on fresh and hardened concrete behavior, including flexural strength and flexural toughness. Results showed that all of the assessed concrete performance increased as fiber was added, and the greatest value was obtained with nine percent of fibers.

Travel between cities in the Bogor, Sukabumi, and Cianjur areas is only accommodated by road-based public transportation that is interstate bus. The government issued a policy to reactivate railroads from Bogor to Padalarang, so that the southern region of West Java are connected to the rail network. This research intention to analyze characteristics of socio-economic users, characteristics of trip users, and analyze how much passengers move from the current bus to the Cianjur-Padalarang train. Data were collected by distributing questionnaires using stated preference techniques and analyzed using binary logit difference model with linear regression. The attributes to be analyzed are the difference between travel costs, travel time, and frequency of departure. The characteristic of users were analyzed with descriptive statictic method. The socio-economic characteristics of the passengers obtained were majority is male, aged 21-30 years old, education level senior high school, worked as entrepreneurship, income Rp2.000.001-Rp3.000.000, transportation costs for a month Rp100.001-Rp300.000. The characteristics of trip users are dominated by origin from Cianjur destination to Padalarang to work (economy), the frequency of trips is 1-2 times per week, the reason choosing the bus because of the bus have more easier mobility, the main travel time is 121-150 minutes. The results of the calculation of model sensitivity, the potential for passenger transfer from bus to train will increase if the difference in cost and travel time between trains and buses is getting smaller, and the difference in frequency is getting bigger.

Jumlah sepeda motor yang ada di jalan mempengaruhi tingkat pelayanan serta karakteristik lalu lintas ruas jalan. Masalah perilaku pengendara sepeda motor yang cenderung tidak tertib membuat tingkat pelayanan jalan sangat terpengaruh. Salah satu solusi yang dapat digunakan adalah dengan menyediakan lajur khusus sepeda motor. Studi ini diawali dengan pengumpulan data sesuai dengan parameter yang diperlukan sebagai dasar penentuan perlunya lajur khusus sepeda motor dan analisis antara lain analisis kinerja jalan yaitu kapasitas, derajat kejenuhan, tingkat pelayanan, serta kecepatan. Kriteria penting untuk kebutuhan lajur sepeda motor adalah proporsi sepeda motor besar dari 34,5% dalam smp/jam. Berdasarkan hasil analisis volume motor memiliki pengaruh besar terhadap derajat kejenuhan serta tingkat pelayanan. Secara keseluruhan,dampak penerapan lajur khusus sepeda motor sangat efektif untuk menaikkan kinerja jalan karena tingkat pelayanan naik dari F menjadi C. Sementara untuk lajur non sepeda motor mengalami sedikit penurunan tingkat pelayanan dari B menjadi C. Proyeksi kejenuhan jalan dengan melihat pertumbuhan kendaraan 5 tahun ke depan, didapatkan hasil yang tidak relevan antara kejenuhan yang sangat tinggi pada lajur khusus motor sebesar 1,44 dengan kecepatan lajur hasil simulasi vissim yang masih normal yaitu 38 km/jam. Dilakukan solusi dengan merubah nilai EMP motor dari 0,25 menjadi 0,13. Hasil analisis menunjukkan penurunan yang signifikan pada kejenuhan sepeda motor yaitu sebesar 0,75 sehingga hasil kejenuhan menjadi relevan dengan kecepatan lajur khusus hasil simulasi.Kata kunci: analisis kinerja jalan, lajur khusus sepeda motor, sepeda motor, tingkat pelayanan