Michigan Weekly Fatal Crashes
Live counter provided by MDOT Toward Zero Deaths. Refresh to see the latest totals.
Board & Bid Letting Dates
Quick PDFs for board meetings and construction bid lettings.
Board Meetings
Bid Lettings
Project Planning
Construction Map
Time Off Decision Helper
Map call-ins to the right leave type with ESTA rules, notes, and approvals.
Open Time Off ToolTaper Lengths
Toggle between simple and advanced taper length calculators in one place.
Open Taper ToolPCMS Message Builder
Compose two-screen, 8x3 portable message signs with a live board preview and GIF export.
Open PCMS ToolCulvert Headwater
Compare inlet vs outlet control headwater, HW/D ratio, and roadway clearance.
Open Culvert ToolUnderdrain Materials
Pipe, fabric, and pea stone quantities for 6" wrapped underdrains (per foot and totals).
Open Underdrain ToolCrash Report Fetcher
Enter a Crash ID to open the corresponding UD-10 PDF report.
Open UD-10 ToolLeft-Turn Queue Length
Estimate left-turn capacity and storage length. Experimental—use with caution.
Open Queue ToolRCOC Turning Warrants
Toggle between left- and right-turn envelopes to see if a taper, lane, or prohibition applies.
Open Warrant ToolStop vs Yield (Safe Approach)
Log sight-triangle measurements and roadway widths before crunching safe approach speeds.
Open Stop/Yield ToolTWSC Example (HCM)
Run the Chapter 32 Example 1 steps for a three-leg two-way stop-controlled intersection.
Open TWSC ToolFillet Area
Pick an angle and radius to estimate fillet area.
Open Fillet ToolIrregular Volumes
Toggle between Average End Area and Cross-Section methods for irregular solids.
Open Irregular Volumes ToolIrregular Area
Equal-spacing irregular figure area using A = L[(a + j)/2 + b + c + d + e + f + g + h + i].
Open Irregular Area ToolPavement Marking
Estimate paint, beads, and totals for lines, legends, and symbols.
Open Marking ToolHMA Weight Factor
Compute compacted HMA lb/SYD/in from JMF Gmb, with optional total lb and tons.
Open HMA Weight ToolHot Poured Rubber
Estimate joint sealant lb/ft and lb/100 ft from lb/gal and sawed joint dimensions.
Open Hot Poured Rubber ToolCrash Rate
Compute crash rates for segments or intersections with a single tool.
Open Crash Rate ToolWork Order Number
Pick the road class, tap the map for a city, and instantly build the work order number.
Open Number ToolClear Zone
Table-based clear zone lookups with slope offsets from the AASHTO RDG.
Open Clear Zone ToolLength of Need
Angle-line LON with deflection, runout check, and RDG-based defaults.
Open LON ToolSuperelevation
Compute e from V²/(15R) with design f defaults and e_max limits.
Open Superelevation ToolStop Sign Warrants
MUTCD 11ed helper for two-way vs multi-way stop considerations.
Open Stop Warrant ToolOakland Co. WQ Volume
Capture volume helper using your manual’s depth/coefficients with a quick link.
Open WQ Volume ToolHighway LOS
Run HCM-style upgrades/downgrades LOS with heavy-vehicle factors and density steps.
Open LOS ToolStopping Sight Distance
Compute uphill/downhill stopping sight distance with a quick chart.
Open SSD ToolHorizontal Sight Offset
Calculate HSO from speed or sight distance with grade and radius.
Open HSO ToolHorizontal Alignment
Drop three points on the aerial map to size a curve and place chevrons.
Open Alignment ToolIntersection Sight Distance
Compute ISD for multiple control cases with visual aids.
Open ISD ToolTravel Time
Run speed studies and sample-size checks for travel-time runs.
Open Travel Time ToolManning's Flow
Compute discharge, velocity, and hydraulic radius for open channels.
Open Manning ToolAASHTO Crest Curve
Compute vertical-curve length/K for SSD or passing sight distance.
Open AASHTO ToolSign Placement
Estimate PR distance, text height, and total distance for sign location.
Open Sign Placement ToolLetter Height
Size sign legend by legibility distance or Table 2D-2 street-name values.
Open Letter Height ToolSign Post Embed
Stack sign faces and pick a 10/12/15 ft post that keeps 3 ft buried.
Open Embed ToolMUTCD Sign Lookup
Search sign codes, descriptions, and plaque notes from the 11th Edition MUTCD.
Open Sign LookupDensity (Cohesive)
Estimate max density/optimum moisture for cohesive soils (AASHTO T-99).
Open Density ToolSEMCOG Maps
Transportation map apps from SEMCOG plus a quick link to Road Jurisdiction.
Child
Oakland County
Official county directory and Board of Commissioners page.
MUTCD
Latest Michigan MUTCD PDF plus the national MUTCD reference site.
MDOT Standard Specs
2020 Standard Specifications book with errata (information only).
Reference Wikis
Traffic and construction knowledge bases used by the team.
External Calculators
Quick links to trusted tools that live outside this site.
Other Sites by Andrew Bates
Fun experiments and data dashboards hosted elsewhere.