Coba jelasin Kategori Transpotasi dari Angkutan dalam bahasa sunda dong

Angkutan jeung komunikasi duanana silih gantikeun jeung silih lengkepan (substitutes and complements). Malah kamajuan dina widang komunikasi bisa ngagantikeun angkutan, kayaning ngaliwatan telegraf, telefon, faks, atawa surélék, batan didatangan jelemana hiji-hiji, nyata yén cara komunikasi kitu ngalahirkeun interaksi nu leuwih gembleng, kaasup interaksi antarpribadi. Pertumbuhan angkutan teu mungkin mun euweuh komunikasi, nu penting pisan pikeun sistim angkutan nu maju. Ti rél karéta nu rék diliwatan ku karéta ti dua arah dina jalur tunggal, nepi ka lalu lintas awang-awang nu merlukeun nyaho lokasi pesawat di awang-awang. Jadi, geus kapanggih yén kamajuan nu hiji bakal ngarojong kana kamajuan nu séjénna.

Angkutan, kagiatan, sarta guna lahan

There is a well-known relationship between the density of development, and types of transportation.  Density is defined as aréa of floorspace per aréa of land.  As a rule of thumb, densities of 1.5 or less are well suited to automobiles.  Densities of six and above are well suited to trains.  The range of densities from about two up to about four is not well served by conventional public or private transport.  Many cities have grown into these densities, and are suffering traffic problems.  Personal rapid transit might fill this gap.

Land uses support activities.  Those activities are spatially separated.  Péople need transport to go from one to the other (from home to work to shop back to home for instance).  Transport is a "derived demand," in that transport is unnecessary but for the activities pursued at the ends of trips.

Good land use keeps common activities close (e.g. housing and food shopping), and places higher-density development closer to transportation lines and hubs.  Poor land use concentrates activities (such as jobs) far from other destinations (such as housing and shopping).

There are economies of agglomeration.  Beyond transportation some land uses are more efficient when clustered.

Transportation facilities consume land, and in cities, pavement (devoted to streets and parking) can éasily exceed 20% of the total land use. An efficient transport system can reduce land waste.