How does the 80km/h to 40km/h drop raise rear-end risks?

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Sudden Speed Limit Reduction Creates Rear-End Collision Risks

Motorists are expressing concerns that the abrupt transition from an 80km/h speed limit to 40km/h on a ramp connecting Jalan Tunku Kudin to the Tun Dr Lim Chong Eu Expressway, particularly towards the Penang Bridge, significantly increases the risk of rear-end collisions. The short distance between the speed limit signs provides insufficient time for drivers to decelerate safely, leading to sudden braking which is a known precursor to such accidents. This situation has resulted in numerous motorists receiving speeding summonses, with many claiming the rapid reduction is impractical and dangerous.
Insufficient Deceleration Time

The primary concern raised by road users is the minimal distance provided between the 80km/h and 40km/h speed limit signs. This short stretch forces drivers to brake sharply and abruptly to comply with the lower limit, leaving little room for error or reaction from vehicles following behind. This abrupt deceleration is a direct contributor to the heightened risk of being rear-ended, especially on a busy thoroughfare.
Downhill Gradient Exacerbates Braking Issues

Further complicating the issue, the road slopes downhill. This gradient makes it exceptionally difficult for drivers to slow down to 40km/h from 80km/h in the allotted distance without engaging in sudden, hard braking. The risk of being hit from behind is amplified on this downhill section, as drivers are less likely to anticipate such a rapid speed change from the vehicle ahead.
Potential for Skidding During Adverse Weather

While the primary concern highlighted by motorists focuses on rear-end collision risks due to sudden braking, police have noted that the sharp bend at this location poses a skidding hazard if vehicles approach too quickly, particularly on wet surfaces during rainy weather. However, the immediate danger perceived by many drivers stems from the compressed timeframe for deceleration, which inherently creates a hazardous situation regardless of road conditions.
Calls for Review and Temporary Enforcement Suspension

The impracticality of the speed limit drop has led to multiple complaints from constituents to local assemblypersons, prompting inspections of the site. While the 40km/h limit was reportedly based on the road's engineering design, authorities are being urged to review the situation for more practical solutions. In response to these concerns, police enforcement of the speed limit at this location has been temporarily suspended to allow for further assessments by relevant technical agencies.

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How does the 80km/h to 40km/h drop raise rear-end risks?

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