Motorcycle Lane Associate Professor Dr. Law Teik Hua Road Safety - PowerPoint PPT Presentation

Road Safety Research Center, UPM Developing Speed-flow-density Relationship for the Segregated Motorcycle Lane Associate Professor Dr. Law Teik Hua Road Safety Research Center

High Motorcycle Population Countries 85% 77% 60% 55% 93% 72% 46% 73%

World Road Deaths Statistics Source: WHO, 2018

Malaysia Registered Motorcycles 8 m, 2008 12 m, 2017

Malaysia Motorcycle Deaths 2008 : 3,898 deaths 2017 : 4,348 deaths

Malaysia Motorcycle Deaths • 68% of all road crash injuries • 20x higher risk than cars

Motorcycle Lanes • First exclusive MC lane in the world • 30 km long (per direction) • -39% mc crashes

MC lane in Kedah, Malaysia

MC lane in Quezon City, Philippines

MC lane in Taipei, Taiwan

MC lane in Taipei, Taiwan

MC lane in Phnom Penh, Cambodia

Research Gap - Max flow - Jam density - Critical density - Critical speed

Speed – Flow – Density Relationship

Experiment Design & Data Collection Stage 1 • Federal Highway (Route 2) • 2.4, 3.0 and 3.3 m • Initial portion of a stable flow (Low density, high speed) • Flow at capacity or near-jam density

Experiment Design & Data Collection Stage 2 • Experimental study • UPM • 1.5, 1.7 and 1.9 m

Experiment Design & Data Collection Stage 3 • Experimental study • Federal Highway (Route 2) • 1.4, 1.6 and 2.0 m

Speed – Flow – Density Relationship

Headway and Space Riding Patterns Headway <1.7 m Space >1.7 m

Mc Speed vs Mc Density (Headway Pattern) Jam density = 640 S

Mc Flow vs Mc Density (Headway Pattern) Max Flow = 3060 Critical density = 235

Mc Speed vs Mc Flow (Headway Pattern) Stable flow Critical Speed = 13 Unstable flow

Mc Speed vs Mc Density (Space Pattern) Jam density = 0.46

Mc Flow vs Mc Density (Space Pattern) Max Flow = 2207 0.166 mc/m-sq (6 m-sq/mc)

Mc Speed vs Mc Flow (Space Pattern) Stable flow Critical Speed = 13 Unstable flow

Conclusions Headway Riding Pattern (1.4 m – 1.7 m) Max flow : 3,060 mc/hr/lane Critical speed : 13 km/hr Critical density : 235 mc/km/lane Headway Riding Pattern (2.8 m – 3.4 m) Max flow : 6,120 mc/hr

Conclusions Space Riding Pattern (> 1.7 m) Max flow : 2,207 mc/hr/m Critical speed : 13 km/hr Critical density : 0.166 mc/m-sq Space Riding Pattern (> 1.7 m) Motorcycle lane width : 2.0 m Max flow : 4,414 mc/hr

Email: lawteik@upm.edu.my