Comparative Analysis of Performance Measures for Network Screening: A Case Study of Brazilian Urban Areas

Table 1

HSM and SPM used in Brazilian safety manuals.

SPM (HSM)	Data needs	SPM (Brazil)
Average Crash Frequency (ACF)	1	√
Crash Rate (CR)	1, 2	√
Equivalent Property Damage Only (EPDO) Average Crash Frequency	3, 4	√
Relative Severity Index (RSI)	5, 6	√
Critical Rate (CRIR)	1, 2	√
Excess Predicted Average Crash Frequency Using Method of Moments (EPAF- MM)	1, 7
Level of Service of Safety (LOSS)	1, 2, 8
Excess Predicted Average Crash Frequency Using Safety Performance Functions (SPF)	1, 8
Probability of Specific Crash Types Exceeding Threshold Proportion (PCTET)	5
Excess Proportion of Specific Crash Types (EPCT)	5
Expected Average Crash Frequency with EB Adjustments (EB)	2, 3, 7, 8
EPDO Average Crash Frequency with EB Adjustment (EPDO - EBA)	2, 3, 4, 7, 8
Excess Expected Average Crash Frequency with EB Adjustment (EEB)	1, 3, 7, 8