# Intelligent Transportation System Technologies, Challenges and Security
## 5 Conclusions  
Studies conducted in recent years show that with the increase in ITS awareness and its stakeholders' tendency to act together, their work has accelerated. For this reason, ITS planning should be performed in a safe, economical, environmentally friendly, solution-oriented, and user-friendly manner, in line with ITS stakeholders' views and relevant institutions' objectives. With the development of technology in smart transportation systems, security attacks that pose great risks have begun to emerge. The danger of death in these unsafe areas greatly increases the severity of these attacks. These security issues must be considered for ITS systems to be efficient and sustainable. In particular, relevant institutions should invest more in this area, and safer ITS practices should be developed. ITS systems should be examined as a whole component in the future, and security maturity models of these systems should be developed. Studies on this subject should be supported. In addition, applications should be developed in this direction to integrate ITS systems with cloud computing, big data, quantum technologies, generative security algorithms, and IoT concepts to adapt to hybrid model-developing technology. The information in this study has been handled according to our area of expertise. The adequacy of the information given in terms of application will vary according to the application areas of the institutions. The success of these requirements and information in practice should be tested. In addition, in line with the information given, the aim should be to give the necessary results in the next studies by investigating whether the institutions and experts apply this information.  
**Author Contributions:** Conceptualization, I.A.; methodology, I.A.; software, M.K.; validation, I.A. and M.K.; resources, I.A.; data curation, M.K.; writing--original draft preparation, M.K.; writing review and editing, I.A.; supervision, I.A. All authors have read and agreed to the published version of the manuscript.  
**Funding:** The research received no external funding.  
**Institutional Review Board Statement:** Not applicable.  
**Informed Consent Statement:** Not applicable.  
**Data Availability Statement:** Data is contained within the article.  
**Conflicts of Interest:** The authors reported no potential conflicts of interest.  
**Nomenclature**  
ITS Intelligent Transportation Systems  
GPS Global Positioning System  
ERTICO European Road Transport Telematics Implementation Coordination  
VANET Vehicular Ad Hoc Network  
ETSI European Telecommunications Standards Institute  
NEMA National Electrical Manufacturers Association  
ISO International Organization for Standardization  
CACS Comprehensive Automobile Traffic Control Systems  
ERGS Electronic Route Guidance System  
RSU Road Side Unit  
V2V Vehicle-To-Vehicle  
V2I Vehicle-To-Infrastructure  
V2X Vehicle-To-Anywhere  
GNSS Global Navigation Satellite System  
DSRC Dedicated Short-Range Communications  
APS Automatic Pass System  
RFID Radio Frequency Identification  
M2M Machine-To-Machine  
LPWAN Low-Power Wide-Area Network  
LoRa Long Range  
C-ITS Collaborative Intelligent Transportation Systems  
NFC Near-Field Communication  
WAWC Wide Area Wireless Communication  
WC Wireless Communication  
MIRT Mobile With Mobile Infrared Transmitters