The growing of internet and IoT application makes large number of devices will be connected each other to exchange data communication. IEEE made standard of WLAN technology to support the needs. But from the existing standard technologies, there are still deficiencies in delivering the data package for communication. IEEE 802.11ah was made as a new standard of Wi-Fi technology that supports wireless networking scenarios and solving the problem of capacity, coverage and power consumption in IoT era. The wireless access network is very attractive for best-effort data package transmission, but VoIP service on the wireless network is very critical due to its real-time communication characteristic. This research addresses the performance analysis of 802.11 ah standard against VoIP services. To determine the influence of node density in 802.11ah standard, the simulation is done by changing the number of station that access the channel via RAW mechanism. The simulation is performed using network simulator NS3 version 3.23. Based on the result, it can be concluded that the evaluation of IEEE 802.11ah standard in the node density scenario accompanied by the changing of RAW station and RAW group number, the use of MCS 5 with 2 MHz bandwidth resulting better network performance than MCS 7 with 1 MHz bandwidth. Using MCS 5 obtained delay value of 0.241761 s on average, the throughput value of 0,5648 Mbps on average, and the PDR value of 19.84 % on average.

Abstract-Rapid [4]. RAW membagi station yang terhubung pada access point menjadi beberapa group dan membuat kanal menjadi terbagi atas beberapa slot, kemudian menempatkan setiap slot pada setiap group. Setiap RAW dapat terdiri atas beberapa group dan setiap group dapat mengelola hingga 64 station [3].Wireless access network merupakan jaringan yang besteffort dalam pengiriman paketnya. Akan tetapi, layanan yang

The role of transportation for the community has  a tremendous impact, especially in daily life activities. In transportation sector, especially land transportation, toll road has a major role in determining the pace of the economy and the level of community prosperity. The condition of the toll road with the facilities available on it capable of supporting the movement of vehicles with a high average speed and in a fast travel time can be considered as an adjustment solution to increase mobility, but in fact these conditions lead to potential traffic accidents. Implementation of safety driving related to the phenomenon of traffic accidents which are the main concern or problem on toll road by creating a decent safety culture. Safety culture is a tendency of attitudes, beliefs, and perceptions that naturally spread within groups that are embodied in rules and values, which are seen in how they act in relation to risk and control systems. This study aims to determine the relationship between safety culture and safety driving among drivers of Pekanbaru Dumai toll road. The subject of this study found 60 drivers who use the Pekanbaru Dumai toll road. Researchers used a safety culture and safety driving questionnaire.The results of this study indicate a very significant positive relationship between safety culture and safety driving, with r = 0.732, p <0.01, r2 = 0.536. It can be concluded that safety culture is one of the factors safety driving among drivers Pekanbaru Dumai toll road with percentage of effect 53.6%, although only one dimension is significant with safety driving.

Entering the information era, the current needs of global community is increasing very rapidly. Vehicular Ad-hoc Networks (VANET) has drawn significant attentions from both industry and academia as an important developmnt of vehicular communication technology. VANET is one of open network and communication media without security mechanism. There are many kinds of security threat that can interrupt data communication in VANET. Wormhole attacks as one of security threat can be a good challenge in VANET security research.  In this paper, we evaluate performance of reactive routing protocol on VANET with wormhole attack scheme. The project is simulated using NS-3 in Ubuntu platform with performance analysis of routing protocol by changing of initial power and node density. We conclude that throughput values are increasing along with the changing of initial power while the delay values are decreasing rapidly. By the changing of node density, the highest delay value is 0.122 ns on 10 nodes condition and 0.215 Mbps for throughput value on 8 nodes condition.