Research Overview

Methodology: Secondary data analysis drawing on RHD, BRTA, Bangladesh Bureau of Statistics, World Bank, and ADB datasets. GIS-based spatial analysis across Bangladesh’s 8 divisions, 64 districts, and 493 upazilas. International benchmarking against Germany, Malaysia, India, and South Korea. Economic projections grounded in established transport multipliers (Calderón & Servén, 2008).

Research Question: How should Bangladesh restructure its road network to eliminate structural fragmentation, reverse its road safety crisis, and provide universal connectivity — and what is the optimal phasing for a 50-year implementation?

Timeframe: Analysis based on 2019–2024 data; projections extend to 2076.

Scope: 375,000+ km national road network serving 171 million people (1,265 persons/km²).

Key Findings

Finding 1 — Road Safety Is a Public Health Emergency, Not a Traffic Problem

Statement: Bangladesh’s road fatality rate is among the worst in South Asia on a per-vehicle basis, driven directly by network design failures rather than behaviour alone.

Evidence:

• Official BRTA data: 5,024 deaths (2023) and 5,480 (2024). Independent NGO figures: 7,902 and 8,543 respectively. WHO modelled estimate: ~31,578 for 2021.
• National highways account for 34.6% of all accidents despite comprising less than 1% of total road length — the single most critical structural failure identified.
• Fatality rates on undivided national highways are 3–5× higher per vehicle-km than on divided, access-controlled roads.
• The wide divergence between official and WHO estimates indicates severe underreporting, suggesting the true scale is far greater than government data reflects.

Frequency: Supported across all data sources (BRTA, NGO, WHO). High consistency year-over-year 2019–2024. Impact: Catastrophic — human, economic, and public health. Confidence: HIGH — multiple independent sources with converging directional evidence.

Finding 2 — Structural Fragmentation, Not Just Underfunding, Is the Root Cause

Statement: The core failure of the existing network is that roads do not perform their designated functions: national highways operate as local arterials, with uncontrolled access points, roadside markets, mixed vehicle classes, and no grade separation.

Evidence:

• National highways have no access control — slow vehicles, pedestrians, and roadside commercial activity mix freely with high-speed traffic.
• Two-thirds of the 375,000 km network is classified as earthen road; only one-third is paved.
• National highways (3,800 km) remain mostly 2-lane undivided outside Dhaka — head-on collisions are the leading cause of fatalities as a result.
• “The result is a system that is simultaneously over-crowded and under-utilised in terms of its engineered capacity.” (Hassan, 2026, p. 3)

Frequency: Identified across infrastructure, safety, and governance dimensions of the analysis. Impact: Systemic — every other problem compounds from this one. Confidence: HIGH — directly observable from network data and accident patterns.

Finding 3 — Dhaka’s Gridlock Imposes Measurable, Large-Scale Economic Losses

Statement: Dhaka’s radial-only road network has produced a gridlock crisis that costs the national economy an estimated USD 3.2 billion annually in lost productivity.

Evidence:

• Average peak-hour traffic speeds in Dhaka have fallen to 5–7 km/h — below walking speed.
• The radial-only design forces all through-traffic through the city core; there is no orbital bypass capacity.
• Dhaka–Chattogram baseline travel time: 5–8 hours for a ~250 km journey.
• Annual productivity loss: ~USD 3.2 billion (cited from official estimates).

Frequency: Persistent and worsening; vehicle registrations increased 4–5× in nine years to 2023. Impact: HIGH — direct GDP drag, freight cost inflation, and quality-of-life deterioration. Confidence: HIGH — well-documented with quantified economic estimates.

Finding 4 — Rural and Upazila Connectivity Is Structurally Inequitable and Climate-Vulnerable

Statement: Approximately one-third of Bangladesh’s population lacks reliable, all-weather road access, with upazila and union roads systematically under-built and unable to withstand monsoon flooding.

Evidence:

• Only ~40% of upazila roads are paved; union roads ~25%; village roads <10%.
• An estimated 25–40% of the unimproved road network becomes impassable for weeks during monsoon flooding.
• 68% of the population currently has upazila market access (2025 baseline); the remaining 32% is disproportionately rural and poor.
• Rural road upgrades in comparable Bangladesh contexts show: school enrolment +8–12%, maternal mortality −12–18%, smallholder agricultural income +15–25% (World Bank, 2022).

Frequency: Affects the majority of Bangladesh’s geographic area and a substantial portion of its population. Impact: HIGH — intersects with poverty, health, food security, and climate adaptation. Confidence: HIGH — grounded in government network inventory data and comparative research.

Finding 5 — Institutional Fragmentation Is a Prerequisite Problem That Blocks All Other Reform

Statement: Road governance is split across at least five agencies (RHD, LGED, BBA, BRTA, city corporations) with weak coordination and chronic under-funding of maintenance — making coherent investment impossible without structural reform first.

Evidence:

• No single authority has responsibility for the national network as a whole.
• Annual maintenance spending falls “far short of requirements”; the Road Maintenance Fund is chronically under-resourced.
• International benchmark: Malaysia’s PLUS, India’s NHDP, and South Korea’s expressway grid all relied on unified highway authorities with dedicated funding streams insulated from annual budget cycles.
• Land acquisition for new corridors is identified as an “extraordinarily contentious” bottleneck given Bangladesh’s population density.

Frequency: Manifests across every infrastructure, safety, and delivery challenge in the paper. Impact: Blocking — without NHA creation, phased delivery of the tri-tier network cannot be coordinated. Confidence: HIGH — structural analysis, not an inference.

Finding 6 — Access Control on High-Speed Roads Is the Single Highest-ROI Safety Intervention

Statement: Introducing physical access control and median barriers on national highways would yield the largest, fastest reduction in fatalities per dollar invested, ahead of any other intervention.

Evidence:

• Malaysia’s PLUS Expressway (1,060 km, fully access-controlled) reduced intercity fatality rates by 68% vs equivalent non-access-controlled routes.
• India’s NHDP reduced travel times on upgraded corridors by 35–45% and produced comparable safety improvements.
• South Korea’s expressway grid, built 1968–2000, generated an estimated 6.5× economic return on infrastructure investment.
• Bangladesh’s own data shows the 3–5× fatality rate differential between undivided and divided roads (see Finding 1).

Frequency: Corroborated by three international analogues plus Bangladesh’s own crash statistics. Impact: HIGH — both safety and economic. Confidence: HIGH — strong cross-country evidence base with consistent effect direction.

Finding 7 — Vehicle Growth Is Dramatically Outpacing Infrastructure Investment

Statement: Registered vehicles have increased 4–5× in nine years to 2023, while road capacity and quality have not kept pace, and 40–50% of the vehicle fleet may be unlicensed or unfit.

Evidence:

• Registered vehicle growth: 4–5× in nine years to 2023 (RHD data).
• Estimated 40–50% of vehicles may have expired registrations, fitness certificates, or operator licences (BRTA, 2024).
• Aggressive overtaking, chronic speeding, and mobile phone use cited as primary behavioural risk factors — compounded by weak enforcement capacity.

Frequency: Ongoing and accelerating demand-side pressure. Impact: MEDIUM-HIGH — demand management without supply reform is insufficient; both needed. Confidence: MEDIUM — the 40–50% unfit vehicle estimate carries inherent uncertainty given underreporting.

Priority Matrix

Proposed Network Design (The Tri-Tier Framework)

The research proposes a hierarchically structured network assigning each road class a specific function, access regime, and lane configuration:

Category I — National Freeway Grid (FW): 4+4 lanes, fully access-controlled, 100–120 km/h design speed, physical median barrier, grade separated. ~2,400 km total across a 3×3 grid (3 east-west belts × 3 north-south spines). Toll-funded. No at-grade intersections; interchange spacing minimum 15 km.

Category II — Inter-District Highway Network (HW): 3+3 lanes, semi-controlled access, 80–100 km/h design speed, raised median, mandatory town bypasses. ~8,500 km total, connecting all 64 district capitals to freeway nodes.

Category III — Upazila & Local Road Network (LR): 2+2 lanes, open access, 50–70 km/h design speed, compacted hard shoulders. ~35,000 km upgraded. All 493 upazilas connected; earthen roads eliminated by 2056. LGED retains management with performance-based funding.

Opportunity Areas (Prioritized)

Opportunity 1 — Create the National Highways Authority (NHA) immediately. All other reform depends on institutional consolidation. NHA should unify RHD, BBA, and DTCA functions for Cat I and II roads, funded through a dedicated road fund from fuel levies and tolls, insulated from annual budget cycles.

Opportunity 2 — Retrofit access control and median barriers on existing national highways. The fastest path to fatality reduction before new freeway construction is complete. Mandatory median barriers and controlled access points on the highest-fatality N-series corridors could replicate Malaysia’s 68% intercity fatality reduction at fraction of new-build cost.

Opportunity 3 — Prioritise the FW-H2 (Benapole–Dhaka–Chattogram) and FW-V2 (Nilphamari–Dhaka–Patuakhali) corridors as the first freeway builds. These two corridors carry the highest traffic volumes, serve the primary economic arteries, and form the backbone of the 3×3 grid. Completing them first generates the highest early returns.

Opportunity 4 — Build the Dhaka ring road system in parallel with Phase 1 freeway work. Three-ring orbital network (inner 24 km elevated, middle 60 km semi-elevated, outer 120 km surface freeway) converts Dhaka from radial to orbital, projecting peak speeds to recover from 5–7 km/h to 18–25 km/h within 10 years of completion.

Opportunity 5 — Accelerate upazila road paving as a climate resilience and equity investment. 200 upazila roads upgraded to Cat III standard in Phase 1 (2026–2036). Eliminating earthen upazila roads by 2056 addresses the monsoon vulnerability that renders 25–40% of the network impassable seasonally.

Recommendations

Immediate (2026–2028):

1. Legislate and capitalise the National Highways Authority — this is the prerequisite for everything else. Without it, multi-agency coordination will continue to stall delivery.
2. Enact the Ribbon Development Control Act (50m setback law) to prevent further roadside encroachment that degrades new highway investment before it opens.
3. Begin land acquisition for FW-H2 and FW-V2 immediately — land acquisition is the longest-lead-time constraint in Bangladesh’s high-density context.
4. Install physical median barriers on the ten highest-fatality national highway segments as an interim safety measure while freeway construction ramps up.

Short-Term (2028–2036 / Phase 1): 5. Complete the Dhaka inner and middle ring roads to break the gridlock crisis. 6. Deliver FW-H2 (Benapole–Dhaka–Chattogram) as the first full freeway corridor — the primary economic artery and strongest proof-of-concept. 7. Replace 500 critical structurally deficient bridges — river crossings are a hard constraint on network continuity given Bangladesh’s hydrology. 8. Upgrade 200 upazila roads to Cat III standard, prioritising those currently earthen and in flood-prone areas.

Medium-Term (2036–2046 / Phase 2): 9. Complete the remaining four freeway corridors (FW-H1, FW-V1, FW-V3, FW-H3) to close the 3×3 grid. 10. Deliver Cat II highway network to 40% completion, focusing on northern district connections. 11. Deploy automated weigh-in-motion enforcement at 200 highway locations — truck overloading is a leading cause of pavement deterioration and structural failures.

Long-Term Systemic: 12. Pursue PPP financing structures modelled on Malaysia’s PLUS and South Korea’s expressway grid — both relied on private capital with clear regulatory frameworks and unified highway authorities. 13. Integrate congestion pricing in Dhaka core alongside ring road construction to manage induced demand.

Projected Impact (If Implemented)

Total investment: USD 48–65 billion over 50 years (~USD 1.0–1.3 billion/year) — consistent with Bangladesh’s projected fiscal trajectory and multilateral financing capacity (ADB, World Bank, AIIB).

Open Questions

The paper is comprehensive but leaves several areas for further investigation:

1. Land acquisition feasibility and cost modelling: Given Bangladesh’s extraordinary population density, right-of-way costs could substantially exceed estimates. Independent cost-benefit analysis at corridor level is needed.
2. Financing structure and fiscal headroom: The paper references PPP models but does not detail toll revenue projections or the fiscal conditions required for sovereign debt financing of Phase 1. A dedicated financial feasibility study is warranted.
3. Demand modelling for freight vs. passenger: The traffic demand projections draw on economic multipliers rather than origin-destination surveys. Corridor-level traffic studies should validate the assumed utilisation rates before each freeway build.
4. Climate change trajectory beyond 2050: Flood elevation benchmarks are set to 100-year levels based on historical data. Climate projections for Bangladesh suggest this baseline may need upward revision, particularly for southern coastal corridors (FW-H3).
5. Social displacement impacts: Large-scale land acquisition in one of the world’s most densely populated countries will involve significant displacement. A resettlement framework study is absent from the proposal.
6. Upazila road governance and maintenance capacity: LGED retaining Category III responsibility with “performance-based funding” is assumed but the institutional capacity-building path to achieve this is not detailed.

Synthesis prepared from: Hassan, J. (2026). Bangladesh Road Network Reform: A Tri-Tier Freeway–Highway–Local Road Proposal. APA 7th Edition. March 2026.