TRAFFIC IMPACT DUE TO DEVELOPMENT BENOA AREA IN BALI

TRAFFIC IMPACT DUE TO DEVELOPMENT BENOA AREA IN BALI

By: I Wayan Suweda

Lecturer in the Department of Civil Engineering, Udayana University, Bali

E-mail: Suweda_wayan@yahoo.com

Bali has an area of ​​5,636.66 km2 which is only 0.29% of the territory of the Republic of Indonesia. This island is known as a tourism destination with unique arts and culture which originates from Hinduism. Along with the development of tourism in Bali, the need for tourism development infrastructure is also increasing. However, this development was hindered by land limitations which gave rise to the idea of ​​maximizing land use in the Benoa area. The plan to utilize and develop the waters of the Benoa Bay area of ​​Bali is also expected to answer the problems of the Strategic Plan of Coastal Areas and Small Islands (WP3K) in Bali. These problems include damage to coastal ecosystems (Mangroves and Padang Seagrass), natural disasters, impacts of global climate change, physical damage to beaches (erosion and abrasion), sedimentation, limited facilities and infrastructure in coastal areas and small islands and weaknesses of local custom empowerment.

The development of tourism infrastructure by structuring the Benoa Bay region while supporting the government program, has been stated in Presidential Regulation No. 67 of 2005 concerning Government and Private cooperation in infrastructure development in Indonesia. To realize this idea, development will be carried out in the Benoa Bay region, considering the condition of the Bay as a tsunami prone area, poorly organized and no protected coral reefs. This alternative is also carried out to utilize land that is in tidal and less productive conditions. In addition, this development will create a new area that can be utilized for tourism development in the Province of Bali and is expected to create a beautiful view from flights to / from Ngurah Rai Airport and from the toll road above the waters around the Benoa Bay. On the other hand, the emergence of various activities in the area will become a new generation center that affects the level of service (LOS) of the surrounding road network.

The existence of the development activities of the utilization of the area, of course, will add new trip generation in the South Bali region. With twelve types of planned activities in an area of ​​± 599, 4 hectares of the total area 1,816 Ha of ​​Benoa Bay, the traffic will impact on the performance of the surrounding road network.

By applying all the 4 stages in "The Four Stages in Transport Planning" transportation planning, the impact can be predicted. Based on the analysis it was found that the development impact for the whole area would reach 178,081 [passenger car unit(pcu)/day] equivalent to a total of 767,428 [person-trip/day] or 356,983 [vehicles/day]. For the Benoa Development Zone, the distributed travel domain is tourism, even though tourists’ arrival in Bali are mostly for business, seminars, family gatherings and leisure. Another part of the trip is to fulfill the needs of the local population. The analysis is based on the results of the interview survey at 12 gas station points around the Benoa bay area and the assumption that the Origin-Destination travel matrix is ​​relatively fixed before and after the development of the area. It can be seen that the distribution of Travel Destinations from the Benoa development zone has a dominant characteristic of tourism as follows: the eastbound trips (Tanjung Benoa and Nusa Dua) are of 3% of total generated trips or 5,463 pcu/day. Meanwhile, the southbound trips toward Pecatu and Jimbaran are of 6% of total generated trips (10,925 pcu/day). The greater percentage of westbound trips heading to Kuta, West Denpasar and West Bali are of 16% of total generated trips or 28,405 pcu / day respectively. The largest distribution of trips is northbound trips heading to the City Centers of Denpasar, Sanur, Gianyar and East Bali reach of 75% of total generated trips or 133,288 pcu/day. It appears that by 2020, some Ngurah Rai and JDP By-pass road segments still have the B and C level of services (LOS). Due to the development of this Benoa region, the LOS of road network decreasing with the maximum value of C. If predicted to arrive at the end of 2070 and if there is no additional network capacity, the overall LOS condition would be F.

Based on the predicted impact of traffic, it can be recommended that the construction of new roads is urgently required to anticipate congestion, both "without" or "with" the development of the Benoa region. This includes the Tanjung Benoa Bridge / tunnel, the primary Arterial road of Tohpati-Sanur-Pesanggaran Port Benoa, the primary arterial road of Pesanggaran (Benoa)-Patung Ngurah Rai-Bandara and the primary collector road of Ngurah Rai-Nusa Dua Statue. These as a whole will increase the road capacity of Tohpati-Nusa Dua By-pass. To reduce the growth of Average Daily Traffic (ADT), the priority is to improve the Sarbagita Public Transport services, so that the needs of people-trips continually be accommodated and the growth of private vehicles as a source of congestion can be reduced.