SPOT SPEED SURVEY ON NATIONAL HIGHWAYS OF NEPAL (NH34 AND NH22)
Client
TRL (The Future of Transport), UK
Project Period
September 2022
Project Area
Kathmandu and Janakpur, Nepal
Practice Area
Road and Access Infrastructure; Road Safety
Service Area
Cross Cutting Issues
Speed Management
INTRODUCTION
TRL is the UK Centre of Excellence for iRAP (the International Road Assessment Programme), which is a global programme working to save lives by investing in Risk Mapping, Star Rating, Safer Roads Investment Plans, and Policy and Performance Tracking tools.
TRL has developed a Speed Management Assessment Tool (SMAT) powered by iRAP coding data. SMAT takes iRAP Star Rating data to assist stakeholders in managing speed in a robust ‘intelligence-led’ way. The research intends to verify the SMAT efficacy in LMICs and provide methodologies for evaluating and managing speed rates for embedding into countries’ road safety operations.
OBJECTIVES OF THE ASSIGNMENT
SWN in association with Traffic & Transport Unlimited Solution Pvt. Ltd (TATUS) carried out the spot speed survey in two National Highways of Nepal (NH34- Janakpur and NH22- Arniko Highway). The objective of the survey was to collect data to determine vehicle speed percentiles, which are useful in making many speed-related decisions
KEY ACTIVITIES AND SERVICE PROVIDED BY SWN and TATUS
In undertaking the assignment, the survey team carried out the following activities
- Consultation with TRL in identifying survey locations and 3 sites in each location
- Spot speed meansurement of cars and all motor vehicle types in a specific location during free flow hours (6-8 am, 1-3 pm and 8-10 pm) in each site.
- Collected spot speed data from more than 11,000 motor vehicle types (6096 were cars) from NH34 and NH22 national highways.
- Speed data entry according to the motor vehicle type in Open Data Kit (ODK)
- Data analysis including calculation of 85th percentile speed of cars, bikes, and all vehicles and final report preparation.
OUTPUTS
All vehicle types spot survey reports and data to determine vehicle speed percentiles, which are useful in making many speed-related decisions
Photo Source: Scott Wilson Nepal, 2022